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Cushion|Lab Grown|GIA

1.02ct D SI1 Cushion Lab Grown Diamond

D/SI1

Diamond specifications and retailer prices

From £792 GBP
As of November 5, 2026
Save £256 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,048 GBP at Washington Diamond · As of November 6, 2026
View at Washington Diamond

About this 1.02ct lab-grown cushion diamond

This 1.02ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included) and certified by GIA. Listed at 2 retailers as of November 5, 2026, with prices from £792 to £1,048, a £256 spread on the same certified stone. Washington Diamond lists it at £1,048. 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

1.02
Carat
D
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions7.12 × 5.42 × 3.46 mm
L/W Ratio1.31
Top View
7.12 mm5.42 mm1.02 ctD / SI1
OriginLab Grown
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 58.0%CrownGirdle: THN-STKPavilionCulet: SLGDepth 63.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £792 GBP|Low: £141 GBP|High: £1,048 GBP|Avg: £540 GBP|-12.7%
Retailer 1
Retailer 2
Washington Diamond
November 6, 2026
Retailer 2£141 GBP
Retailer 1£792 GBP
Washington Diamond£1,048 GBP

14 data points across 3 retailers

2 retailers£792 GBP to £1,048 GBP

B
Cheapest Retailer
-
£792 GBP
Most Expensive
C
Washington Diamond
1949231306 · Nov 6
£1,048 GBP
$1,403 USD
View
1 more retailer has this diamond
Prices start from £792 GBPSave up to £256 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.

B
1.02ct Cushion
£792 GBP