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Heart|Lab Grown|GIA

1.50ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • GIA 6421049136

Certificate GIA 6421049136

Diamond specifications and retailer prices

From £331 GBP
As of November 6, 2026
Save £1,172 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,503 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown heart diamond

This 1.5ct lab-grown heart 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 6421049136. Listed at 8 retailers as of November 5, 2026, with prices from £331 to £1,503, a £1,172 spread on the same certified stone. MOH London lists it at £1,503. 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

1.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6421049136
Dimensions7.80 × 6.80 × 4.76 mm
L/W Ratio1.15
Top View
7.80 mm6.80 mm1.50 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421049136
Side View
Table 66.0%CrownGirdle: MED-THKPavilionCulet: 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 6
Current: £1,503 GBP|Low: £318 GBP|High: £1,525 GBP|Avg: £796 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 3£331 GBP
Retailer 7£371 GBP
Retailer 5£410 GBP
Retailer 8£410 GBP
Retailer 2£612 GBP
Retailer 4£1,270 GBP
Retailer 6£1,319 GBP
MOH London£1,503 GBP

44 data points across 8 retailers

8 retailers£331 GBP to £1,503 GBP

A
Cheapest Retailer
-
£331 GBP
B+
Retailer 2
-
£371 GBP
View
B+
Retailer 3
-
£410 GBP
View
Retailer 4
-
£410 GBP
View
Price last confirmed 12 days ago
B+
Retailer 5
-
£612 GBP
View
B
Retailer 6
-
£1,270 GBP
View
B
Retailer 7
-
£1,319 GBP
View
Most Expensive
B
MOH London
6421049136 · Nov 5
£1,503 GBP
View
7 more retailers have this diamond
Prices start from £331 GBPSave up to £1,172 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
1.50ct Heart
£331 GBP