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Marquise|Natural|GIA

2.51ct D SI2 Marquise Natural Diamond

EX • D/SI2

Diamond specifications and retailer prices

From $39,427 SGD
$30,841 USD
As of November 2, 2026
Save $14,243 SGD (27%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $53,670 SGD at The Diamond Guys · As of November 2, 2026
View at The Diamond Guys

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 6 retailers as of November 2, 2026, with prices from $39,427 to $53,670, a $14,243 spread on the same certified stone. The Diamond Guys lists it at $53,670. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
Dimensions12.90 × 7.02 × 4.46 mm
L/W Ratio1.84
Top View
12.90 mm7.02 mm2.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA
Side View
Table 57.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 63.6%

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 2
Current: $50,421 SGD|Low: $39,059 SGD|High: $53,670 SGD|Avg: $47,607 SGD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
The Diamond Guys
November 2, 2026
Retailer 3$39,427 SGD
Retailer 5$43,279 SGD
Retailer 2$44,998 SGD
Retailer 6$49,968 SGD
Retailer 1$50,421 SGD
Retailer 4$50,701 SGD
The Diamond Guys$53,670 SGD

42 data points across 7 retailers

6 retailers$39,427 SGD to $53,670 SGD

A
Cheapest Retailer
-
$39,427 SGD
$30,841 USD
B+
Retailer 2
-
$43,279 SGD
CA$47,019 CAD
View
B+
Retailer 3
-
$44,998 SGD
$35,199 USD
View
B
Retailer 4
-
$49,968 SGD
$39,086 USD
View
B
Retailer 5
-
$50,421 SGD
£31,056 GBP
View
Most Expensive
B
The Diamond Guys
1965159174 · Nov 2
$53,670 SGD
$41,982 USD
View
5 more retailers have this diamond
Prices start from $39,427 SGDSave up to $14,243 SGD

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
$39,427 SGD