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1.02ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • GCAL 283540071

Shape and cutting style on the report: Round brilliant

Certificate GCAL 283540071

Diamond specifications and retailer prices

From £266 GBP
$357 USD
As of November 1, 2026
Save £491 GBP (65%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £757 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.02ct lab-grown round diamond

This 1.02ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 283540071. Listed at 4 retailers as of November 1, 2026, with prices from £266 to £757, a £491 spread on the same certified stone. MOH London lists it at £757. 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

1.02
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 283540071
Dimensions6.50 × 6.47 × 3.95 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.50 mm6.47 mm1.02 ctI / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGCAL 283540071
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £757 GBP|Low: £139 GBP|High: £767 GBP|Avg: £369 GBP|+6.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2£147 GBP
Retailer 3£266 GBP
Retailer 4£271 GBP
MOH London£757 GBP

13 data points across 4 retailers

4 retailers£266 GBP to £757 GBP

Retailer 1
-
£147 GBP
$197 USD
Price last confirmed 7 days ago
A
Retailer 2
-
£266 GBP
$357 USD
View
A
Retailer 3
-
£271 GBP
$363 USD
View
Most Expensive
B+
MOH London
283540071 · Nov 1
£757 GBP
View
3 more retailers have this diamond
Prices start from £266 GBPSave up to £491 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
1.02ct Round
£266 GBP