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2.57ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG478111991

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478111991

Diamond specifications and retailer prices

From HK$10,906 HKD
$1,390 USD
As of October 30, 2026
Save HK$55,634 HKD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$66,540 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 2.57ct lab-grown round diamond

This 2.57ct lab-grown round sits in the two to three carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478111991 or 478111991. Listed at 10 retailers as of October 29, 2026, with prices from HK$10,906 to HK$66,540, a HK$55,634 spread on the same certified stone. MOH London lists it at HK$66,540. 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

2.57
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478111991
Dimensions8.62 × 8.68 × 5.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.62 mm8.68 mm2.57 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478111991
Side View
Table 56.0%Crown 36.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.9%

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$66,540 HKD|Low: HK$10,906 HKD|High: HK$67,068 HKD|Avg: HK$33,107 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
October 30, 2026
Retailer 2HK$10,906 HKD
Retailer 5HK$21,309 HKD
Retailer 8HK$23,184 HKD
Retailer 10HK$23,859 HKD
Retailer 6HK$24,722 HKD
Retailer 11HK$30,065 HKD
Retailer 9HK$33,980 HKD
Retailer 4HK$36,271 HKD
Retailer 7HK$38,475 HKD
Retailer 3HK$55,322 HKD
MOH LondonHK$66,540 HKD

19 data points across 11 retailers

10 retailersHK$10,906 HKD to HK$66,540 HKD

A
Cheapest Retailer
-
HK$10,906 HKD
$1,390 USD
B+
Retailer 2
-
HK$21,309 HKD
$2,716 USD
View
B+
Retailer 3
-
HK$23,184 HKD
$2,955 USD
View
B+
Retailer 4
-
HK$23,859 HKD
$3,041 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$24,722 HKD
$3,151 USD
View
Retailer 6
-
HK$24,722 HKD
$3,151 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
HK$33,980 HKD
$4,331 USD
View
B
Retailer 8
-
HK$36,271 HKD
$4,623 USD
View
B
Retailer 9
-
HK$38,475 HKD
$4,904 USD
View
Most Expensive
B
MOH London
LG478111991 · Oct 29
HK$66,540 HKD
£6,678 GBP
View
9 more retailers have this diamond
Prices start from HK$10,906 HKDSave up to HK$55,634 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
2.57ct Round
HK$10,906 HKD