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Round|Lab Grown|GCAL

1.28ct I VS1 Round Lab Grown Diamond

ID • I/VS1 • GCAL 270160019

Shape and cutting style on the report: Round brilliant

Certificate GCAL 270160019

Diamond specifications and retailer prices

From £311 GBP
$417 USD
As of November 1, 2026
Save £476 GBP (60%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £786 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GCAL 270160019. Listed at 4 retailers as of November 1, 2026, with prices from £311 to £786, a £476 spread on the same certified stone. MOH London lists it at £786. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 270160019
Dimensions7.08 × 7.05 × 4.21 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.08 mm7.05 mm1.28 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 270160019
Side View
Table 61.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.6%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £786 GBP|Low: £277 GBP|High: £875 GBP|Avg: £574 GBP|-9.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2£311 GBP
Retailer 3£415 GBP
Retailer 4£759 GBP
MOH London£786 GBP

12 data points across 4 retailers

4 retailers£311 GBP to £786 GBP

A
Cheapest Retailer
-
£311 GBP
$417 USD
A
Retailer 2
-
£415 GBP
$557 USD
View
B
Retailer 3
-
£759 GBP
$1,019 USD
View
Most Expensive
B+
MOH London
270160019 · Nov 1
£786 GBP
View
3 more retailers have this diamond
Prices start from £311 GBPSave up to £476 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
1.28ct Round
£311 GBP