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Heart|Lab Grown|IGI

1.00ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG823616463

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG823616463

Diamond specifications and retailer prices

From £116 GBP
$156 USD
As of October 30, 2026
Save £669 GBP (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £785 GBP at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

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 LG823616463 or 823616463. Listed at 15 retailers as of October 30, 2026, with prices from £116 to £785, a £669 spread on the same certified stone. Reve Diamonds lists it at £785. 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
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823616463
Dimensions6.86 × 6.02 × 4.13 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.86 mm6.02 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823616463
Side View
Table 64.0%Crown 37.4°Girdle: STK-THKPavilion 39.4°Culet: NoneDepth 60.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £130 GBP|Low: £91 GBP|High: £787 GBP|Avg: £320 GBP|+42.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Reve Diamonds
November 1, 2026
Retailer 4£116 GBP
Retailer 1£130 GBP
Retailer 3£135 GBP
Retailer 13£144 GBP
Retailer 6£145 GBP
Retailer 10£237 GBP
Retailer 9£250 GBP
Retailer 11£262 GBP
Retailer 12£273 GBP
Retailer 2£381 GBP
Retailer 8£463 GBP
Retailer 5£470 GBP
Retailer 14£504 GBP
Retailer 7£673 GBP
Reve Diamonds£785 GBP

44 data points across 15 retailers

15 retailers£116 GBP to £785 GBP

A
Cheapest Retailer
-
£116 GBP
$156 USD
A
Retailer 2
-
£130 GBP
$174 USD
View
Final sale: no returns
A
Retailer 3
-
£135 GBP
$181 USD
View
A
Retailer 4
-
£144 GBP
$193 USD
View
Retailer 5
-
£145 GBP
$194 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£237 GBP
$318 USD
View
B+
Retailer 7
-
£250 GBP
View
B+
Retailer 8
-
£262 GBP
$351 USD
View
B+
Retailer 9
-
£273 GBP
View
B
Retailer 10
-
£381 GBP
$511 USD
View
B
Retailer 11
-
£463 GBP
$620 USD
View
B
Retailer 12
-
£470 GBP
$630 USD
View
B
Retailer 13
-
£504 GBP
$675 USD
View
B
Retailer 14
-
£673 GBP
View
Most Expensive
B
Reve Diamonds
AED661E6E · Nov 1
£785 GBP
$1,052 USD
View
14 more retailers have this diamond
Prices start from £116 GBPSave up to £669 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
£116 GBP