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Heart|Lab Grown|IGI

0.91ct J SI1 Heart Lab Grown Diamond

VG • J/SI1 • IGI LG569312460

Certificate IGI LG569312460

Diamond specifications and retailer prices

From £782 GBP
As of November 6, 2026
Save £571 GBP (42%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,354 GBP at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 0.91ct lab-grown heart diamond

This 0.91ct lab-grown heart sits in the just-under-one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG569312460 or 569312460. Listed at 2 retailers as of November 5, 2026, with prices from £782 to £1,354, a £571 spread on the same certified stone. 77 Diamonds lists it at £1,354. 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

0.91
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG569312460
Dimensions5.50 × 6.55 × 4.08 mm
L/W Ratio1.19
Top View
5.50 mm6.55 mm0.91 ctJ / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG569312460
Side View
Table 56.5%CrownGirdle: Very ThickPavilionCuletDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,354 GBP|Low: £782 GBP|High: £1,369 GBP|Avg: £1,079 GBP|+1.3%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 2£782 GBP
Retailer 3£1,079 GBP
77 Diamonds£1,354 GBP

45 data points across 3 retailers

2 retailers£782 GBP to £1,354 GBP

B+
Cheapest Retailer
-
£782 GBP
Most Expensive
B
77 Diamonds
HSCP7KRGXATA · Nov 5
£1,354 GBP
View
1 more retailer has this diamond
Prices start from £782 GBPSave up to £571 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+
0.91ct Heart
£782 GBP