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Cushion|Lab Grown|GIA

1.53ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • GIA 1399479800

Certificate GIA 1399479800

Diamond specifications and retailer prices

From £277 GBP
As of November 6, 2026
Save £1,045 GBP (79%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,322 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.53ct lab-grown cushion diamond

This 1.53ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1399479800. Listed at 2 retailers as of November 5, 2026, with prices from £277 to £1,322, a £1,045 spread on the same certified stone. MOH London lists it at £1,322. 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

1.53
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 1399479800
Dimensions7.71 × 6.14 × 4.21 mm
L/W Ratio1.26
Culet sizeNone
Key to symbols
Feather, Growth Remnant
Top View
7.71 mm6.14 mm1.53 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1399479800
Side View
Table 61.0%CrownGirdle: SLT-THKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,322 GBP|Low: £277 GBP|High: £1,342 GBP|Avg: £984 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
November 5, 2026
Retailer 2£277 GBP
Retailer 3£1,165 GBP
MOH London£1,322 GBP

12 data points across 3 retailers

2 retailers£277 GBP to £1,322 GBP

A
Cheapest Retailer
-
£277 GBP
Final sale: no returns
Most Expensive
B
MOH London
1399479800 · Nov 5
£1,322 GBP
View
1 more retailer has this diamond
Prices start from £277 GBPSave up to £1,045 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
1.53ct Cushion
£277 GBP