CaratHunter
Plans
Round|Natural|GIA

2.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6535246891

Certificate GIA 6535246891

Diamond specifications and retailer prices

From HK$176,208 HKD
$22,458 USD
As of November 1, 2026
Save HK$95,573 HKD (35%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$300,013 HKD at MOH London · As of October 26, 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 6535246891. Listed at 22 retailers as of October 27, 2026, with a 54% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6535246891
Dimensions8.94 × 8.83 × 5.34 mm
L/W Ratio1.01
Top View
8.94 mm8.83 mm2.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6535246891
Side View
Table 55.0%Crown 32°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 60.1%

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: HK$300,013 HKD|Low: HK$166,981 HKD|High: HK$303,221 HKD|Avg: HK$207,865 HKD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3HK$166,981 HKD
Retailer 6HK$168,927 HKD
Retailer 11HK$176,365 HKD
Retailer 10HK$186,831 HKD
Retailer 9HK$197,628 HKD
Retailer 2HK$208,711 HKD
Retailer 8HK$220,789 HKD
Retailer 5HK$221,412 HKD
Retailer 4HK$223,813 HKD
Retailer 7HK$230,980 HKD
MOH LondonHK$300,013 HKD

39 data points across 11 retailers

22 retailersHK$176,208 HKD to HK$271,781 HKD

Retailer 1
-
HK$168,927 HKD
$21,530 USD
Price last confirmed 8 days ago
A
Retailer 2
-
HK$176,208 HKD
$22,458 USD
View
Retailer 3
-
HK$176,365 HKD
$22,478 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
HK$177,867 HKD
$22,670 USD
View
A
Retailer 5
-
HK$180,536 HKD
CA$31,958 CAD
View
B+
Retailer 6
-
HK$186,831 HKD
$23,812 USD
View
Final sale: no returns
Retailer 7
-
HK$191,845 HKD
$24,451 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
HK$197,628 HKD
$25,188 USD
View
Retailer 9
-
HK$204,548 HKD
$26,070 USD
View
Price last confirmed 7 days ago
Retailer 10
-
HK$204,548 HKD
$26,070 USD
View
Price last confirmed 7 days ago
Retailer 11
-
HK$205,049 HKD
$26,134 USD
View
Price last confirmed 8 days ago
Retailer 12
-
HK$207,827 HKD
$26,488 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
HK$208,711 HKD
£20,945 GBP
View
Retailer 14
-
HK$211,374 HKD
$26,940 USD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
HK$215,823 HKD
$27,507 USD
View
B+
Retailer 16
-
HK$220,789 HKD
$28,140 USD
View
B+
Retailer 17
-
HK$221,412 HKD
£22,220 GBP
View
B+
Retailer 18
-
HK$223,813 HKD
€27,167 EUR
View
B+
Retailer 19
-
HK$223,881 HKD
$28,534 USD
View
Retailer 20
-
HK$230,980 HKD
$29,439 USD
View
Price last confirmed 7 days ago
B
Retailer 21
-
HK$271,781 HKD
$34,639 USD
View
Most Expensive
MOH London
97D4BD44F · Oct 26
HK$300,013 HKD
£30,108 GBP
View
Price last confirmed 7 days ago
21 more retailers have this diamond
Prices start from HK$176,208 HKDSave up to HK$95,573 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 Round
HK$176,208 HKD