Round|Natural|GIA

2.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6545165280

Certificate GIA 6545165280

Diamond specifications and retailer prices

From $21,700 USD
As of October 31, 2026
Save $12,923 USD (37%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $34,623 USD at MOH London · As of October 29, 2026
View at MOH London

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6545165280. Listed at 7 retailers as of October 29, 2026, with prices from $21,700 to $34,623, a $12,923 spread on the same certified stone. MOH London lists it at $34,623. 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
F
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6545165280
Dimensions8.64 × 8.58 × 5.46 mm
L/W Ratio1.01
Top View
8.64 mm8.58 mm2.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545165280
Side View
Table 56.0%Crown 36°Girdle: THN-THNPavilion 41.2°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $34,623 USD|Low: $21,700 USD|High: $36,565 USD|Avg: $27,320 USD|-5.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 6$21,700 USD
Retailer 5$22,112 USD
Retailer 10$23,677 USD
Retailer 3$25,511 USD
Retailer 4$25,557 USD
Retailer 9$26,042 USD
Retailer 7$26,368 USD
Retailer 2$30,429 USD
Retailer 8$31,238 USD
MOH London$34,623 USD

28 data points across 10 retailers

7 retailers$21,700 USD to $34,623 USD

A
Cheapest Retailer
-
$21,700 USD
A
Retailer 2
-
$22,112 USD
View
B+
Retailer 3
-
$25,511 USD
£20,087 GBP
View
B+
Retailer 4
-
$25,557 USD
View
B+
Retailer 5
-
$26,368 USD
View
B
Retailer 6
-
$31,238 USD
View
Most Expensive
B
MOH London
0872B4462 · Oct 29
$34,623 USD
£27,262 GBP
View
6 more retailers have this diamond
Prices start from $21,700 USDSave up to $12,923 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.

A
2.51ct Round
$21,700 USD