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Round|Natural|GIA

2.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 3555571199

Certificate GIA 3555571199

Diamond specifications and retailer prices

From $10,061 USD
As of November 4, 2026
Save $8,012 USD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $18,073 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555571199. Listed at 10 retailers as of November 4, 2026, with prices from $10,061 to $18,073, a $8,012 spread on the same certified stone. NZ Jewellers lists it at $18,073. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.51
Carat
M
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3555571199
Dimensions8.61 × 8.65 × 5.40 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.61 mm8.65 mm2.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 3555571199
Side View
Table 58.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $18,073 USD|Low: $8,560 USD|High: $18,073 USD|Avg: $11,774 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3$8,560 USD
Retailer 4$9,093 USD
Retailer 12$10,061 USD
Retailer 8$10,158 USD
Retailer 9$10,844 USD
Retailer 11$11,747 USD
Retailer 6$11,928 USD
Retailer 10$12,018 USD
Retailer 5$13,001 USD
Retailer 7$13,554 USD
Retailer 2$14,120 USD
NZ Jewellers$18,073 USD

38 data points across 12 retailers

10 retailers$10,061 USD to $18,073 USD

B+
Cheapest Retailer
-
$10,061 USD
B+
Retailer 2
-
$10,158 USD
View
Retailer 3
-
$10,844 USD
View
Price last confirmed 8 days ago
B
Retailer 4
-
$11,747 USD
View
B
Retailer 5
-
$11,928 USD
View
B
Retailer 6
-
$12,018 USD
View
B
Retailer 7
-
$13,001 USD
View
B
Retailer 8
-
$13,554 USD
View
B
Retailer 9
-
$14,120 USD
View
Most Expensive
C
NZ Jewellers
928eeac4-075c-4203-be19-aaab7d08d85b · Nov 5
$18,073 USD
View
9 more retailers have this diamond
Prices start from $10,061 USDSave up to $8,012 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
2.51ct Round
$10,061 USD