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Round|Natural|GIA

2.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5242069331

Certificate GIA 5242069331

Diamond specifications and retailer prices

From HK$85,717 HKD
As of November 3, 2026
Save HK$43,196 HKD (34%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$128,912 HKD at Diamonds Direct · As of November 1, 2026
View at Diamonds Direct

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5242069331. Listed at 13 retailers as of November 1, 2026, with prices from HK$85,717 to HK$128,912, a HK$43,196 spread on the same certified stone. Diamonds Direct lists it at HK$128,912. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5242069331
Dimensions8.63 × 8.67 × 5.43 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.63 mm8.67 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242069331
Side View
Table 55.0%Crown 34.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

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 3
Current: HK$128,912 HKD|Low: HK$85,717 HKD|High: HK$135,934 HKD|Avg: HK$106,054 HKD|-5.2%
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 6HK$85,717 HKD
Retailer 8HK$92,534 HKD
Retailer 7HK$93,468 HKD
Retailer 10HK$94,417 HKD
Retailer 11HK$94,919 HKD
Retailer 2HK$95,194 HKD
Retailer 13HK$96,676 HKD
Retailer 12HK$97,673 HKD
Retailer 3HK$110,759 HKD
Retailer 9HK$111,370 HKD
Retailer 4HK$111,488 HKD
Retailer 5HK$115,191 HKD
Diamonds DirectHK$128,912 HKD

30 data points across 13 retailers

13 retailersHK$85,717 HKD to HK$128,912 HKD

A
Cheapest Retailer
-
HK$85,717 HKD
A
Retailer 2
-
HK$92,534 HKD
View
A
Retailer 3
-
HK$93,468 HKD
View
A
Retailer 4
-
HK$94,417 HKD
View
A
Retailer 5
-
HK$94,919 HKD
View
A
Retailer 6
-
HK$95,194 HKD
View
A
Retailer 7
-
HK$96,676 HKD
View
A
Retailer 8
-
HK$97,673 HKD
View
B+
Retailer 9
-
HK$110,759 HKD
View
B+
Retailer 10
-
HK$111,370 HKD
View
B+
Retailer 11
-
HK$111,488 HKD
View
Retailer 12
-
HK$115,191 HKD
View
Price last confirmed 11 days ago
Most Expensive
B+
Diamonds Direct
1120578 · Nov 1
HK$128,912 HKD
$16,432 USD
View
12 more retailers have this diamond
Prices start from HK$85,717 HKDSave up to HK$43,196 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$85,717 HKD