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Oval|Natural|GIA

2.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 6551518379

Certificate GIA 6551518379

Diamond specifications and retailer prices

From HK$48,208 HKD
As of November 5, 2026
Save HK$25,981 HKD (35%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$74,189 HKD at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 2.51ct natural oval diamond

This 2.51ct natural oval sits in the two to three carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551518379. Listed at 10 retailers as of November 5, 2026, with prices from HK$48,208 to HK$74,189, a HK$25,981 spread on the same certified stone. The Diamond Guys lists it at HK$74,189. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.54°
Pavilion angle39.08°
OriginNatural
Grading LabGIA
CertificateGIA 6551518379
Dimensions10.67 × 7.64 × 4.76 mm
L/W Ratio1.40
Culet sizeNone
Top View
10.67 mm7.64 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551518379
Side View
Table 60.0%Crown 39.54°Girdle: MED-THKPavilion 39.08°Culet: NoneDepth 62.4%

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 5
Current: HK$66,351 HKD|Low: HK$47,941 HKD|High: HK$87,238 HKD|Avg: HK$65,914 HKD|-9.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3HK$48,208 HKD
Retailer 8HK$52,213 HKD
Retailer 4HK$55,230 HKD
Retailer 10HK$57,135 HKD
Retailer 9HK$57,401 HKD
Retailer 6HK$65,066 HKD
Retailer 7HK$65,583 HKD
Retailer 1HK$66,351 HKD
Retailer 5HK$67,355 HKD
Retailer 2HK$87,238 HKD

31 data points across 10 retailers

10 retailersHK$48,208 HKD to HK$74,189 HKD

A
Cheapest Retailer
-
HK$48,208 HKD
A
Retailer 2
-
HK$52,213 HKD
View
A
Retailer 3
-
HK$55,230 HKD
View
A
Retailer 4
-
HK$57,135 HKD
View
A
Retailer 5
-
HK$57,401 HKD
View
A
Retailer 6
-
HK$65,066 HKD
View
A
Retailer 7
-
HK$65,583 HKD
View
A
Retailer 8
-
HK$66,351 HKD
View
A
Retailer 9
-
HK$67,355 HKD
View
Most Expensive
B+
The Diamond Guys
1963437036 · Nov 6
HK$74,189 HKD
$9,466 USD
View
9 more retailers have this diamond
Prices start from HK$48,208 HKDSave up to HK$25,981 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 Oval
HK$48,208 HKD