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2.51ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1547670666

Certificate GIA 1547670666

Diamond specifications and retailer prices

From HK$56,964 HKD
As of November 4, 2026
Save HK$14,451 HKD (20%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$71,415 HKD at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1547670666. Listed at 5 retailers as of November 4, 2026, with prices from HK$56,964 to HK$71,415, a HK$14,451 spread on the same certified stone. The Diamond Guys lists it at HK$71,415. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1547670666
Dimensions8.67 × 8.71 × 5.38 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.67 mm8.71 mm2.51 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1547670666
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.0%

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 4
Current: HK$66,590 HKD|Low: HK$46,091 HKD|High: HK$84,046 HKD|Avg: HK$67,218 HKD|-7.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
The Diamond Guys
November 5, 2026
Retailer 6HK$46,091 HKD
Retailer 4HK$56,964 HKD
Retailer 3HK$65,664 HKD
Retailer 1HK$66,590 HKD
Retailer 2HK$67,633 HKD
The Diamond GuysHK$71,415 HKD
Retailer 5HK$84,046 HKD

27 data points across 7 retailers

5 retailersHK$56,964 HKD to HK$71,415 HKD

A
Cheapest Retailer
-
HK$56,964 HKD
B+
Retailer 2
-
HK$65,664 HKD
View
B+
Retailer 3
-
HK$66,590 HKD
View
B+
Retailer 4
-
HK$67,633 HKD
View
Most Expensive
B+
The Diamond Guys
1922550695 · Nov 6
HK$71,415 HKD
$9,103 USD
View
4 more retailers have this diamond
Prices start from HK$56,964 HKDSave up to HK$14,451 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$56,964 HKD