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Marquise|Natural|GIA

2.51ct D SI2 Marquise Natural Diamond

EX • D/SI2

Diamond specifications and retailer prices

From HK$241,969 HKD
$30,841 USD
As of October 31, 2026
Save HK$87,409 HKD (27%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$329,378 HKD 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 October 31, 2026, with prices from HK$241,969 to HK$329,378, a HK$87,409 spread on the same certified stone. The Diamond Guys lists it at HK$329,378. 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: Oct 31
Current: HK$309,462 HKD|Low: HK$239,710 HKD|High: HK$329,378 HKD|Avg: HK$292,184 HKD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
The Diamond Guys
November 1, 2026
Retailer 3HK$241,969 HKD
Retailer 5HK$265,606 HKD
Retailer 2HK$276,161 HKD
Retailer 6HK$306,657 HKD
Retailer 1HK$309,462 HKD
Retailer 4HK$311,160 HKD
The Diamond GuysHK$329,378 HKD

41 data points across 7 retailers

6 retailersHK$241,969 HKD to HK$329,378 HKD

A
Cheapest Retailer
-
HK$241,969 HKD
$30,841 USD
B+
Retailer 2
-
HK$265,606 HKD
CA$47,019 CAD
View
B+
Retailer 3
-
HK$276,161 HKD
$35,199 USD
View
B
Retailer 4
-
HK$306,657 HKD
$39,086 USD
View
B
Retailer 5
-
HK$309,462 HKD
£31,058 GBP
View
Most Expensive
B
The Diamond Guys
1965159174 · Nov 2
HK$329,378 HKD
$41,982 USD
View
5 more retailers have this diamond
Prices start from HK$241,969 HKDSave up to HK$87,409 HKD

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
HK$241,969 HKD