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Cushion|Lab Grown|IGI

1.51ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG436045068

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG436045068

Diamond specifications and retailer prices

From HK$18,755 HKD
As of November 6, 2026
Save HK$19,347 HKD (51%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$38,102 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436045068 or 436045068. Listed at 4 retailers as of November 1, 2026, with prices from HK$18,755 to HK$38,102, a HK$19,347 spread on the same certified stone. MOH London lists it at HK$38,102. 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

1.51
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045068
Dimensions6.67 × 6.61 × 4.50 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.67 mm6.61 mm1.51 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436045068
Side View
Table 60.5%Crown 33.2°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 68.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: HK$38,102 HKD|Low: HK$11,858 HKD|High: HK$38,610 HKD|Avg: HK$22,315 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 4HK$11,858 HKD
Retailer 5HK$16,333 HKD
Retailer 3HK$18,755 HKD
Retailer 2HK$18,771 HKD
MOH LondonHK$38,102 HKD

13 data points across 5 retailers

4 retailersHK$18,755 HKD to HK$38,102 HKD

Retailer 1
-
HK$11,858 HKD
Price last confirmed 26 days ago
B
Retailer 2
-
HK$18,755 HKD
View
B
Retailer 3
-
HK$18,771 HKD
View
Most Expensive
B
MOH London
LG436045068 · Nov 1
HK$38,102 HKD
£3,828 GBP
View
3 more retailers have this diamond
Prices start from HK$18,755 HKDSave up to HK$19,347 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$18,755 HKD