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Cushion|Lab Grown|GIA

1.50ct H SI1 Cushion Lab Grown Diamond

ID • H/SI1 • GIA 6382754624

Certificate GIA 6382754624

Diamond specifications and retailer prices

From £333 GBP
As of November 1, 2026
Save £683 GBP (67%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,016 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.5ct lab-grown cushion diamond

This 1.5ct 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6382754624. Listed at 4 retailers as of October 29, 2026, with prices from £333 to £1,016, a £683 spread on the same certified stone. MOH London lists it at £1,016. 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

1.50
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6382754624
Dimensions7.23 × 6.11 × 4.10 mm
L/W Ratio1.18
Top View
7.23 mm6.11 mm1.50 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6382754624
Side View
Table 66.0%CrownGirdle: THK-THKPavilionCulet: NoneDepth 67.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £1,016 GBP|Low: £333 GBP|High: £1,023 GBP|Avg: £680 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 2£333 GBP
Retailer 3£334 GBP
Retailer 5£799 GBP
Retailer 4£936 GBP
MOH London£1,016 GBP

28 data points across 5 retailers

4 retailers£333 GBP to £1,016 GBP

A
Cheapest Retailer
-
£333 GBP
A
Retailer 2
-
£334 GBP
HK$3,500 HKD
View
B+
Retailer 3
-
£936 GBP
$1,254 USD
View
Most Expensive
B+
MOH London
6382754624 · Oct 29
£1,016 GBP
View
3 more retailers have this diamond
Prices start from £333 GBPSave up to £683 GBP

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
1.50ct Cushion
£333 GBP