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Heart|Lab Grown|IGI

1.23ct D VVS1 Heart Lab Grown Diamond

ID • D/VVS1 • IGI LG828688731

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG828688731

Diamond specifications and retailer prices

From £171 GBP
$230 USD
As of November 2, 2026
Save £951 GBP (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,122 GBP at Michael Trio · As of November 2, 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 LG828688731 or 828688731. Listed at 20 retailers as of November 2, 2026, with prices from £171 to £1,122, a £951 spread on the same certified stone. Michael Trio lists it at £1,122. 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 angle35.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828688731
Dimensions6.67 × 7.32 × 4.39 mm
L/W Ratio1.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.67 mm7.32 mm1.23 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828688731
Side View
Table 61.0%Crown 35.3°Girdle: STK-THKPavilion 41°Culet: NoneDepth 60.0%

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: Nov 2
Current: £1,122 GBP|Low: £171 GBP|High: £1,135 GBP|Avg: £485 GBP|-1.2%
Michael Trio
Retailer 2
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November 2, 2026
Retailer 7£171 GBP
Retailer 8£192 GBP
Retailer 15£199 GBP
Retailer 18£213 GBP
Retailer 12£215 GBP
Retailer 13£243 GBP
Retailer 6£287 GBP
Retailer 16£368 GBP
Retailer 2£384 GBP
Retailer 14£401 GBP
Retailer 5£449 GBP
Retailer 4£452 GBP
Retailer 10£524 GBP
Retailer 19£684 GBP
Retailer 20£687 GBP
Retailer 9£723 GBP
Retailer 3£737 GBP
Retailer 11£815 GBP
Retailer 17£854 GBP
Michael Trio£1,122 GBP

16 data points across 20 retailers

20 retailers£171 GBP to £1,122 GBP

A
Cheapest Retailer
-
£171 GBP
$230 USD
A
Retailer 2
-
£192 GBP
$258 USD
View
Final sale: no returns
A
Retailer 3
-
£199 GBP
$267 USD
View
A
Retailer 4
-
£213 GBP
$286 USD
View
Retailer 5
-
£215 GBP
$289 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
£243 GBP
View
A
Retailer 7
-
£287 GBP
$385 USD
View
A
Retailer 8
-
£368 GBP
ZAR 7,970 ZAR
View
B+
Retailer 9
-
£384 GBP
€491 EUR
View
B+
Retailer 10
-
£401 GBP
View
B+
Retailer 11
-
£449 GBP
$602 USD
View
B+
Retailer 12
-
£452 GBP
$606 USD
View
B+
Retailer 13
-
£524 GBP
A$1,081 AUD
View
B+
Retailer 14
-
£684 GBP
$918 USD
View
B
Retailer 15
-
£687 GBP
$922 USD
View
B+
Retailer 16
-
£723 GBP
$971 USD
View
B+
Retailer 17
-
£737 GBP
$989 USD
View
Retailer 18
-
£815 GBP
A$1,683 AUD
View
Price last confirmed 8 days ago
B
Retailer 19
-
£854 GBP
View
Most Expensive
B
Michael Trio
5709104730 · Nov 2
£1,122 GBP
SGD 2,035 SGD
View
19 more retailers have this diamond
Prices start from £171 GBPSave up to £951 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