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Round|Lab Grown|IGI

1.80ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG492113524

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492113524

Diamond specifications and retailer prices

From HK$10,199 HKD
$1,300 USD
As of October 28, 2026
Save HK$13,470 HKD (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$36,256 HKD at MOH London · As of October 19, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492113524 or 492113524. Listed at 12 retailers as of October 27, 2026, with a 132% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492113524
Dimensions7.90 × 7.83 × 4.71 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
7.90 mm7.83 mm1.80 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492113524
Side View
Table 56.0%Crown 33.1°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 60.0%

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 28
Current: HK$36,256 HKD|Low: HK$8,708 HKD|High: HK$36,495 HKD|Avg: HK$16,855 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
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 8HK$10,199 HKD
Retailer 7HK$10,889 HKD
Retailer 12HK$11,846 HKD
Retailer 11HK$12,191 HKD
Retailer 9HK$12,631 HKD
Retailer 14HK$12,631 HKD
Retailer 3HK$13,964 HKD
Retailer 6HK$16,561 HKD
Retailer 2HK$16,624 HKD
Retailer 5HK$17,346 HKD
Retailer 10HK$19,942 HKD
Retailer 4HK$22,916 HKD
Retailer 13HK$23,669 HKD
MOH LondonHK$36,256 HKD

36 data points across 14 retailers

12 retailersHK$10,199 HKD to HK$23,669 HKD

A
Cheapest Retailer
-
HK$10,199 HKD
$1,300 USD
A
Retailer 2
-
HK$10,889 HKD
$1,388 USD
View
B+
Retailer 3
-
HK$11,846 HKD
$1,510 USD
View
B+
Retailer 4
-
HK$12,191 HKD
$1,554 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$12,631 HKD
$1,610 USD
View
B+
Retailer 6
-
HK$12,631 HKD
$1,610 USD
View
Price last confirmed 16 days ago
B+
Retailer 7
-
HK$13,964 HKD
$1,780 USD
View
B+
Retailer 8
-
HK$16,624 HKD
£1,669 GBP
View
B
Retailer 9
-
HK$19,942 HKD
$2,542 USD
View
B
Retailer 10
-
HK$22,916 HKD
$2,921 USD
View
B
Retailer 11
-
HK$23,669 HKD
$3,017 USD
View
Most Expensive
B
MOH London
LG492113524 · Oct 19
HK$36,256 HKD
£3,639 GBP
View
Price last confirmed 10 days ago
11 more retailers have this diamond
Prices start from HK$10,199 HKDSave up to HK$13,470 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$10,199 HKD