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Heart|Lab Grown|IGI

1.00ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG707522054

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG707522054

Diamond specifications and retailer prices

From £233 GBP
$312 USD
As of November 1, 2026
Save £245 GBP (51%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £478 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG707522054 or 707522054. Listed at 5 retailers as of October 31, 2026, with prices from £233 to £478, a £245 spread on the same certified stone. Brilliant Earth lists it at £478. 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.9°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG707522054
Dimensions6.70 × 6.26 × 4.06 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.70 mm6.26 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG707522054
Side View
Table 64.0%Crown 37.9°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 60.6%

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: £478 GBP|Low: £211 GBP|High: £493 GBP|Avg: £378 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 4£233 GBP
Retailer 2£279 GBP
Retailer 9£299 GBP
Retailer 6£306 GBP
Retailer 3£416 GBP
Retailer 8£442 GBP
Retailer 5£452 GBP
Retailer 7£456 GBP
Brilliant Earth£478 GBP

13 data points across 9 retailers

5 retailers£233 GBP to £478 GBP

A
Cheapest Retailer
-
£233 GBP
$312 USD
B+
Retailer 2
-
£279 GBP
€356 EUR
View
B
Retailer 3
-
£416 GBP
$558 USD
View
B
Retailer 4
-
£452 GBP
SGD 818 SGD
View
Most Expensive
B
Brilliant Earth
14922831A · Oct 31
£478 GBP
$640 USD
View
4 more retailers have this diamond
Prices start from £233 GBPSave up to £245 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
1.00ct Heart
£233 GBP