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Heart|Lab Grown|IGI

1.23ct D VVS1 Heart Lab Grown Diamond

ID • D/VVS1 • IGI LG837614919

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG837614919

Diamond specifications and retailer prices

From £171 GBP
$230 USD
As of October 30, 2026
Save £946 GBP (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,118 GBP at Michael Trio · As of November 1, 2026
View at Michael Trio

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG837614919 or 837614919. Listed at 19 retailers as of October 30, 2026, with prices from £171 to £1,118, a £946 spread on the same certified stone. Michael Trio lists it at £1,118. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837614919
Dimensions6.77 × 7.53 × 4.30 mm
L/W Ratio1.11
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.77 mm7.53 mm1.23 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837614919
Side View
Table 60.0%Crown 33.8°Girdle: THN-MEDPavilion 40°Culet: NoneDepth 57.1%

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: Oct 30
Current: £1,118 GBP|Low: £171 GBP|High: £1,127 GBP|Avg: £478 GBP|-0.8%
Michael Trio
Retailer 2
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Retailer 19
November 2, 2026
Retailer 6£171 GBP
Retailer 4£192 GBP
Retailer 13£198 GBP
Retailer 16£212 GBP
Retailer 10£214 GBP
Retailer 2£242 GBP
Retailer 15£285 GBP
Retailer 14£366 GBP
Retailer 12£397 GBP
Retailer 18£448 GBP
Retailer 8£452 GBP
Retailer 9£522 GBP
Retailer 17£682 GBP
Retailer 5£687 GBP
Retailer 3£721 GBP
Retailer 19£734 GBP
Retailer 7£810 GBP
Retailer 11£857 GBP
Michael Trio£1,118 GBP

21 data points across 19 retailers

19 retailers£171 GBP to £1,118 GBP

A
Cheapest Retailer
-
£171 GBP
$230 USD
A
Retailer 2
-
£192 GBP
$257 USD
View
Final sale: no returns
A
Retailer 3
-
£198 GBP
$266 USD
View
A
Retailer 4
-
£212 GBP
$285 USD
View
Retailer 5
-
£214 GBP
$287 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
£242 GBP
View
A
Retailer 7
-
£285 GBP
$382 USD
View
A
Retailer 8
-
£366 GBP
ZAR 7,938 ZAR
View
B+
Retailer 9
-
£397 GBP
View
B+
Retailer 10
-
£448 GBP
$601 USD
View
B+
Retailer 11
-
£452 GBP
$606 USD
View
B+
Retailer 12
-
£522 GBP
A$1,077 AUD
View
B+
Retailer 13
-
£682 GBP
$915 USD
View
B
Retailer 14
-
£687 GBP
$922 USD
View
B+
Retailer 15
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£721 GBP
$967 USD
View
B+
Retailer 16
-
£734 GBP
$985 USD
View
B
Retailer 17
-
£810 GBP
A$1,672 AUD
View
B
Retailer 18
-
£857 GBP
View
Most Expensive
B
Michael Trio
1766853901 · Nov 1
£1,118 GBP
SGD 2,027 SGD
View
18 more retailers have this diamond
Prices start from £171 GBPSave up to £946 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
1.23ct Heart
£171 GBP