Marquise|Natural|GIA

2.51ct H SI2 Marquise Natural Diamond

ID • H/SI2 • GIA 2564718645

Certificate GIA 2564718645

Diamond specifications and retailer prices

From $22,178 USD
SGD 29,970 SGD
As of November 1, 2026
Save $6,297 USD (22%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $28,475 USD at Frank Darling · As of November 1, 2026
View at Frank Darling

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564718645. Listed at 6 retailers as of November 1, 2026, with prices from $22,178 to $28,475, a $6,297 spread on the same certified stone. Frank Darling lists it at $28,475. 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
H
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564718645
Dimensions14.31 × 6.76 × 4.27 mm
L/W Ratio2.12
Top View
14.31 mm6.76 mm2.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564718645
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.1%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $28,475 USD|Low: $22,178 USD|High: $28,475 USD|Avg: $24,742 USD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6$22,178 USD
Retailer 2$23,780 USD
Retailer 3$24,203 USD
Retailer 4$24,391 USD
Retailer 5$25,305 USD
Frank Darling$28,475 USD

5 data points across 6 retailers

6 retailers$22,178 USD to $28,475 USD

A
Cheapest Retailer
-
$22,178 USD
SGD 29,970 SGD
B+
Retailer 2
-
$23,780 USD
£18,724 GBP
View
B+
Retailer 3
-
$24,203 USD
View
B+
Retailer 4
-
$24,391 USD
View
B+
Retailer 5
-
$25,305 USD
View
Most Expensive
B
Frank Darling
260646-77HK · Nov 1
$28,475 USD
View
5 more retailers have this diamond
Prices start from $22,178 USDSave up to $6,297 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 Marquise
$22,178 USD