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Heart|Lab Grown|GCAL

1.63ct G SI1 Heart Lab Grown Diamond

EX • G/SI1 • GCAL 302670874

Shape and cutting style on the report: Heart brilliant

Certificate GCAL 302670874

Diamond specifications and retailer prices

From £239 GBP
As of November 6, 2026
Save £1,034 GBP (81%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,273 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.63ct lab-grown heart diamond

This 1.63ct lab-grown heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 302670874. Listed at 7 retailers as of November 5, 2026, with prices from £239 to £1,273, a £1,034 spread on the same certified stone. MOH London lists it at £1,273. 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

1.63
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle41.9°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 302670874
Dimensions7.19 × 8.36 × 4.69 mm
L/W Ratio1.16
Culet sizeNone
Top View
7.19 mm8.36 mm1.63 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 302670874
Side View
Table 66.0%Crown 37.4°GirdlePavilion 41.9°Culet: NoneDepth 56.1%

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 6
Current: £1,273 GBP|Low: £229 GBP|High: £1,292 GBP|Avg: £626 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 3£239 GBP
Retailer 6£277 GBP
Retailer 7£361 GBP
Retailer 5£481 GBP
Retailer 8£518 GBP
Retailer 2£868 GBP
Retailer 4£1,050 GBP
MOH London£1,273 GBP

15 data points across 8 retailers

7 retailers£239 GBP to £1,273 GBP

A
Cheapest Retailer
-
£239 GBP
A
Retailer 2
-
£277 GBP
View
B+
Retailer 3
-
£361 GBP
View
B+
Retailer 4
-
£481 GBP
View
B
Retailer 5
-
£868 GBP
View
B
Retailer 6
-
£1,050 GBP
View
Most Expensive
B
MOH London
302670874 · Nov 5
£1,273 GBP
View
6 more retailers have this diamond
Prices start from £239 GBPSave up to £1,034 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
1.63ct Heart
£239 GBP