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1.80ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG451057428

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057428

Diamond specifications and retailer prices

From HK$7,924 HKD
$1,010 USD
As of October 31, 2026
Save HK$28,734 HKD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$36,658 HKD at MOH London · As of October 27, 2026
View at MOH London

About this 1.8ct lab-grown round diamond

This 1.8ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057428 or 451057428. Listed at 10 retailers as of October 27, 2026, with prices from HK$7,924 to HK$36,658, a HK$28,734 spread on the same certified stone. MOH London lists it at HK$36,658. 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

1.80
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057428
Dimensions7.74 × 7.77 × 4.79 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.74 mm7.77 mm1.80 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057428
Side View
Table 57.0%Crown 36.4°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.8%

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: Oct 31
Current: HK$36,658 HKD|Low: HK$7,924 HKD|High: HK$37,106 HKD|Avg: HK$18,286 HKD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2HK$7,924 HKD
Retailer 3HK$9,823 HKD
Retailer 6HK$10,992 HKD
Retailer 4HK$11,392 HKD
Retailer 8HK$15,880 HKD
Retailer 5HK$18,061 HKD
Retailer 7HK$21,238 HKD
Retailer 9HK$25,483 HKD
MOH LondonHK$36,658 HKD

14 data points across 9 retailers

10 retailersHK$7,924 HKD to HK$36,658 HKD

A
Cheapest Retailer
-
HK$7,924 HKD
$1,010 USD
B+
Retailer 2
-
HK$9,823 HKD
$1,252 USD
View
B+
Retailer 3
-
HK$10,686 HKD
$1,362 USD
View
B+
Retailer 4
-
HK$10,992 HKD
$1,401 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$11,392 HKD
$1,452 USD
View
Retailer 6
-
HK$11,392 HKD
$1,452 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
HK$18,061 HKD
$2,302 USD
View
B
Retailer 8
-
HK$21,238 HKD
$2,707 USD
View
B
Retailer 9
-
HK$21,364 HKD
$2,723 USD
View
Most Expensive
B
MOH London
LG451057428 · Oct 27
HK$36,658 HKD
£3,679 GBP
View
9 more retailers have this diamond
Prices start from HK$7,924 HKDSave up to HK$28,734 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
1.80ct Round
HK$7,924 HKD