Pearl Grading

Your Guide to Exceptional Quality

At HELAS JEWELRY, we believe that understanding pearl grading is essential to making aninformed and confident purchase. Our proprietary Grading System ensures that every pearlmeets the highest standards of quality, offering you the best value for your investment.

Why Grading Matters:
Helps you identify the finest pearls within your budget
Ensures lasting beauty and durability
Provides transparency and trust in your purchase

HELAS Grading System: 
A comprehensive evaluation of Surface, Luster, Nacre Thickness, and Shape.
Only the top-tier pearls are selected for our collections.

Akoya Pearls

The size range of Japanese Akoya pearls varies from a minimum of 2 millimeters to a maximum of 10 millimeters. Pearls smaller than 6.0 millimeters are considered small, while those between 5.0 and 8.5 millimeters are common sizes for pearl jewelry on HELAS. Akoya pearls larger than 8.0 millimeters are regarded as above average in size, and such pearls are rarer and more precious.

Luster

Very Strong

Strong to Very Strong

Strong

Medium to Strong

Medium

Poor

Surface

98% Clean
Flawless

≥95% Clean
Very Good

90% Clean
Good

80-90% Clean
Fair

80-90% Clean
Fair

≤50% Clean
Poor

Shape

Perfectly Round

Round

Round

Round

Near-Round

Off-Round

Nacre Thickness

​Exceptional Thickness

​Very Thick

Thick

​Relatively Thick

Medium Thickness

Thin

Pearl Grading

Your Guide to Exceptional Quality

At HELAS JEWELRY, we believe that understanding pearl grading is essential to making aninformed and confident purchase. Our proprietary Grading System ensures that every pearlmeets the highest standards of quality, offering you the best value for your investment.

Why Grading Matters:
Helps you identify the finest pearls within your budget
Ensures lasting beauty and durability
Provides transparency and trust in your purchase

HELAS Grading System: 
A comprehensive evaluation of Surface, Luster, Nacre Thickness, and Shape.
Only the top-tier pearls are selected for our collections.

Akoya Pearls

The size range of Japanese Akoya pearls varies from a minimum of 2 millimeters to a maximum of 10 millimeters. Pearls smaller than 6.0 millimeters are considered small, while those between 5.0 and 8.5 millimeters are common sizes for pearl jewelry on HELAS. Akoya pearls larger than 8.0 millimeters are regarded as above average in size, and such pearls are rarer and more precious.

Luster

Very Strong

Strong to Very Strong

Strong

Medium to Strong

Medium

Poor
Title

Surface

98% Clean
Flawless

≥95% Clean
Very Good

90% Clean
Good

80-90% Clean
Fair

80-90% Clean
Fair

≤50% Clean
Poor
Title

Shape

Perfectly Round

Round

Round

Round

Near-Round

Off-Round
Title

Nacre Thickness

​Exceptional Thickness

Very Thick

Thick

​Relatively Thick

Medium Thickness

Thin

Tahitian Pearls

The size range of Tahitian pearls spans from a minimum of 7 millimeters to exceptionally rare cases of 20 millimeters. HELAS offers Tahitian pearls starting from 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Tahitian Pearls

The size range of Tahitian pearls spans from a minimum of 7 millimeters to exceptionally rare cases of 20 millimeters. HELAS offers Tahitian pearls starting from 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor
Title

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor
Title

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

Australian White Pearls

Australian White Pearls: The size range of white South Sea pearls spans from a minimum of 7-8 millimeters to an exceptionally rare maximum of 20 millimeters. HELAS offers smaller sizes typically at 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor
Title

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor
Title

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

South Sea Golden Pearls

South Sea Golden Pearls: The size range spans from a minimum of 7-8 millimeters to an exceptionally rare maximum of 20 millimeters. HELAS offers smaller sizes typically at 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor
Title

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor
Title

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

Tahitian Pearls

The size range of Tahitian pearls spans from a minimum of 7 millimeters to exceptionally rare cases of 20 millimeters. HELAS offers Tahitian pearls starting from 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Australian White Pearls

Australian White Pearls: The size range of white South Sea pearls spans from a minimum of 7-8 millimeters to an exceptionally rare maximum of 20 millimeters. HELAS offers smaller sizes typically at 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor
Title

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor
Title

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

Tahitian Pearls

The size range of Tahitian pearls spans from a minimum of 7 millimeters to exceptionally rare cases of 20 millimeters. HELAS offers Tahitian pearls starting from 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

South Sea Golden Pearls

South Sea Golden Pearls: The size range spans from a minimum of 7-8 millimeters to an exceptionally rare maximum of 20 millimeters. HELAS offers smaller sizes typically at 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor

Color

Rich Golden /

Tea Golden

Rich Golden

Medium Golden

Light Golden

Cream Golden

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor
Title

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor
Title

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

Australian White Pearls

Australian White Pearls: The size range of white South Sea pearls spans from a minimum of 7-8 millimeters to an exceptionally rare maximum of 20 millimeters. HELAS offers smaller sizes typically at 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor
Title

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor
Title

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

South Sea Golden Pearls

South Sea Golden Pearls: The size range spans from a minimum of 7-8 millimeters to an exceptionally rare maximum of 20 millimeters. HELAS offers smaller sizes typically at 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor
Title

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor
Title

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

Australian White Pearls

Australian White Pearls: The size range of white South Sea pearls spans from a minimum of 7-8 millimeters to an exceptionally rare maximum of 20 millimeters. HELAS offers smaller sizes typically at 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor
Title

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor
Title

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color

South Sea Golden Pearls

South Sea Golden Pearls: The size range spans from a minimum of 7-8 millimeters to an exceptionally rare maximum of 20 millimeters. HELAS offers smaller sizes typically at 8-9mm, with more common sizes including 9-10mm and 10-11mm. Generally, any size of 11-12mm and above is considered above average. These pearls are exceptionally rare and precious, particularly high-quality ones.

Luster

Very Strong

Strong to Very Strong

Strong

Medium

Poor
Title

Surface

≥95% Clean
Flawless

90%-95% Clean
Very Good

80%-90% Clean
Good

70-80% Clean
Fair-Poor

≤50% Clean
Poor
Title

Color

Body Color
+
≥ 2 Overtones

Body Color
+
2 Overtones

Body Color
+
1-2 Overtones

Body Color
+
1 Overtone

Body Color