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Cushion|Lab Grown|IGI

1.51ct H SI1 Cushion Lab Grown Diamond

GD • H/SI1 • IGI LG526259531

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG526259531

Diamond specifications and retailer prices

From HK$2,409 HKD
$307 USD
As of November 1, 2026
Save HK$8,273 HKD (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$10,681 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG526259531 or 526259531. Listed at 9 retailers as of November 1, 2026, with prices from HK$2,409 to HK$10,681, a HK$8,273 spread on the same certified stone. MOH London lists it at HK$10,681. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
H
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526259531
Dimensions7.33 × 7.14 × 4.32 mm
L/W Ratio1.03
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
7.33 mm7.14 mm1.51 ctH / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526259531
Side View
Table 63.5%Crown 33.9°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$10,681 HKD|Low: HK$1,718 HKD|High: HK$10,811 HKD|Avg: HK$5,356 HKD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7HK$2,409 HKD
Retailer 4HK$2,668 HKD
Retailer 9HK$3,797 HKD
Retailer 3HK$3,805 HKD
Retailer 6HK$4,409 HKD
Retailer 8HK$5,304 HKD
Retailer 10HK$5,410 HKD
Retailer 2HK$6,198 HKD
Retailer 5HK$7,610 HKD
MOH LondonHK$10,681 HKD

14 data points across 10 retailers

9 retailersHK$2,409 HKD to HK$10,681 HKD

B+
Cheapest Retailer
-
HK$2,409 HKD
$307 USD
Final sale: no returns
Retailer 2
-
HK$2,668 HKD
$340 USD
View
Price last confirmed 24 days ago
B+
Retailer 3
-
HK$3,797 HKD
$484 USD
View
B+
Retailer 4
-
HK$3,805 HKD
$485 USD
View
B+
Retailer 5
-
HK$4,409 HKD
$562 USD
View
B+
Retailer 6
-
HK$5,304 HKD
$676 USD
View
B+
Retailer 7
-
HK$6,198 HKD
$790 USD
View
B
Retailer 8
-
HK$7,610 HKD
$970 USD
View
Most Expensive
B
MOH London
LG526259531 · Nov 1
HK$10,681 HKD
£1,072 GBP
View
8 more retailers have this diamond
Prices start from HK$2,409 HKDSave up to HK$8,273 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.

B+
1.51ct Cushion
HK$2,409 HKD