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12.39ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2225192990

Certificate GIA 2225192990

Diamond specifications and retailer prices

From HK$2,455,591 HKD
As of October 30, 2026
Save HK$1,236,377 HKD (33%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$3,691,968 HKD at Yorxs · As of October 31, 2026
View at Yorxs

About this 12.39ct natural round diamond

This 12.39ct natural round sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2225192990. Listed at 4 retailers as of October 30, 2026, with prices from HK$2,455,591 to HK$3,691,968, a HK$1,236,377 spread on the same certified stone. Yorxs lists it at HK$3,691,968. 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

12.39
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2225192990
Dimensions15.08 × 15.02 × 9.00 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Key to symbols
Crystal, Needle, Feather, Etch Channel
Top View
15.08 mm15.02 mm12.39 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2225192990
Side View
Table 60.0%Crown 34.5°Girdle: NUL-THNPavilion 41.2°Culet: NoneDepth 59.9%

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: Oct 30
Current: HK$3,220,535 HKD|Low: HK$2,455,591 HKD|High: HK$3,894,565 HKD|Avg: HK$3,004,770 HKD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
October 31, 2026
Retailer 3HK$2,455,591 HKD
Retailer 2HK$2,760,086 HKD
Retailer 4HK$2,843,341 HKD
Retailer 1HK$3,220,535 HKD
YorxsHK$3,691,968 HKD

17 data points across 5 retailers

4 retailersHK$2,455,591 HKD to HK$3,691,968 HKD

A
Cheapest Retailer
-
HK$2,455,591 HKD
Retailer 2
-
HK$2,760,086 HKD
SGD 475,400 SGD
View
Price last confirmed 22 days ago
B+
Retailer 3
-
HK$3,220,535 HKD
£323,216 GBP
View
Most Expensive
B+
Yorxs
S-1333 · Oct 31
HK$3,691,968 HKD
€448,164 EUR
View
3 more retailers have this diamond
Prices start from HK$2,455,591 HKDSave up to HK$1,236,377 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
12.39ct Round
HK$2,455,591 HKD