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Round|Natural|GIA

2.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2566649853

Certificate GIA 2566649853

Diamond specifications and retailer prices

From HK$170,823 HKD
As of November 1, 2026
Save HK$145,127 HKD (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$315,950 HKD at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566649853. Listed at 19 retailers as of November 1, 2026, with prices from HK$170,823 to HK$315,950, a HK$145,127 spread on the same certified stone. MOH London lists it at HK$315,950. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566649853
Dimensions8.65 × 8.69 × 5.36 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
8.65 mm8.69 mm2.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2566649853
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.8%

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$315,950 HKD|Low: HK$170,522 HKD|High: HK$317,644 HKD|Avg: HK$221,324 HKD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 4HK$170,823 HKD
Retailer 8HK$172,611 HKD
Retailer 14HK$174,881 HKD
Retailer 3HK$181,706 HKD
Retailer 5HK$184,186 HKD
Retailer 11HK$191,749 HKD
Retailer 16HK$196,927 HKD
Retailer 17HK$202,301 HKD
Retailer 12HK$204,112 HKD
Retailer 6HK$210,736 HKD
Retailer 18HK$212,422 HKD
Retailer 19HK$219,162 HKD
Retailer 2HK$223,123 HKD
Retailer 7HK$227,596 HKD
Retailer 10HK$229,965 HKD
Retailer 13HK$244,372 HKD
Retailer 15HK$279,741 HKD
Retailer 9HK$282,516 HKD
MOH LondonHK$315,950 HKD

17 data points across 19 retailers

19 retailersHK$170,823 HKD to HK$315,950 HKD

A
Cheapest Retailer
-
HK$170,823 HKD
Retailer 2
-
HK$172,611 HKD
₹2,095,301 INR
View
Price last confirmed 8 days ago
A
Retailer 3
-
HK$174,881 HKD
$22,290 USD
View
A
Retailer 4
-
HK$181,706 HKD
$23,160 USD
View
A
Retailer 5
-
HK$184,186 HKD
$23,476 USD
View
Retailer 6
-
HK$195,829 HKD
$24,960 USD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
HK$196,927 HKD
$25,100 USD
View
B+
Retailer 8
-
HK$202,301 HKD
$25,785 USD
View
B+
Retailer 9
-
HK$204,112 HKD
£20,485 GBP
View
B+
Retailer 10
-
HK$210,736 HKD
$26,860 USD
View
B+
Retailer 11
-
HK$212,422 HKD
$27,075 USD
View
B+
Retailer 12
-
HK$219,162 HKD
$27,934 USD
View
B+
Retailer 13
-
HK$223,123 HKD
£22,393 GBP
View
B+
Retailer 14
-
HK$227,596 HKD
$29,009 USD
View
Retailer 15
-
HK$229,965 HKD
$29,311 USD
View
Price last confirmed 9 days ago
B
Retailer 16
-
HK$244,372 HKD
€29,664 EUR
View
B
Retailer 17
-
HK$279,741 HKD
ZAR 576,015 ZAR
View
Retailer 18
-
HK$282,516 HKD
$36,009 USD
View
Price last confirmed 7 days ago
Most Expensive
B
MOH London
6829E11F8 · Nov 1
HK$315,950 HKD
£31,709 GBP
View
18 more retailers have this diamond
Prices start from HK$170,823 HKDSave up to HK$145,127 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$170,823 HKD