CaratHunter
Plans
Round|Lab Grown|IGI

1.80ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG497155955

Shape and cutting style on the report: Round brilliant

Certificate IGI LG497155955

Diamond specifications and retailer prices

From HK$7,924 HKD
$1,010 USD
As of October 31, 2026
Save HK$15,746 HKD (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$36,259 HKD at MOH London · As of October 21, 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 LG497155955 or 497155955. Listed at 12 retailers as of October 31, 2026, with a 199% 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 angle33.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497155955
Dimensions7.88 × 7.90 × 4.76 mm
L/W Ratio1.00
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
7.88 mm7.90 mm1.80 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497155955
Side View
Table 57.5%Crown 33.3°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 60.4%

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: Oct 31
Current: HK$36,259 HKD|Low: HK$7,924 HKD|High: HK$36,548 HKD|Avg: HK$16,944 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
October 30, 2026
Retailer 2HK$7,924 HKD
Retailer 7HK$10,890 HKD
Retailer 11HK$11,847 HKD
Retailer 10HK$12,192 HKD
Retailer 8HK$12,632 HKD
Retailer 13HK$12,632 HKD
Retailer 3HK$13,965 HKD
Retailer 6HK$16,579 HKD
Retailer 5HK$17,347 HKD
Retailer 9HK$19,944 HKD
Retailer 4HK$22,917 HKD
Retailer 12HK$23,670 HKD
MOH LondonHK$36,259 HKD

23 data points across 13 retailers

12 retailersHK$7,924 HKD to HK$23,670 HKD

A
Cheapest Retailer
-
HK$7,924 HKD
$1,010 USD
B+
Retailer 2
-
HK$10,890 HKD
$1,388 USD
View
B+
Retailer 3
-
HK$11,847 HKD
$1,510 USD
View
B+
Retailer 4
-
HK$12,192 HKD
$1,554 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$12,632 HKD
$1,610 USD
View
Retailer 6
-
HK$12,632 HKD
$1,610 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
HK$13,965 HKD
$1,780 USD
View
B+
Retailer 8
-
HK$16,579 HKD
£1,664 GBP
View
B
Retailer 9
-
HK$19,944 HKD
$2,542 USD
View
B
Retailer 10
-
HK$22,917 HKD
$2,921 USD
View
B
Retailer 11
-
HK$23,670 HKD
$3,017 USD
View
Most Expensive
MOH London
LG497155955 · Oct 21
HK$36,259 HKD
£3,639 GBP
View
Price last confirmed 10 days ago
11 more retailers have this diamond
Prices start from HK$7,924 HKDSave up to HK$15,746 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