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Heart|Lab Grown|IGI

1.23ct D VVS1 Heart Lab Grown Diamond

VG • D/VVS1 • IGI LG799619921

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG799619921

Diamond specifications and retailer prices

From £159 GBP
$214 USD
As of November 2, 2026
Save £1,368 GBP (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,528 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 very-good cut grade and certified by IGI LG799619921 or 799619921. Listed at 15 retailers as of November 2, 2026, with prices from £159 to £1,528, a £1,368 spread on the same certified stone. Do Amore Diamonds lists it at £1,528. 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

1.23
Carat
D
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799619921
Dimensions6.75 × 7.51 × 4.12 mm
L/W Ratio1.11
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
6.75 mm7.51 mm1.23 ctD / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799619921
Side View
Table 59.0%Crown 37.1°Girdle: STK-THKPavilion 36.6°Culet: NoneDepth 54.9%

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: £1,528 GBP|Low: £151 GBP|High: £1,528 GBP|Avg: £474 GBP|+5.7%
Do Amore Diamonds
Retailer 2
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Retailer 20
November 2, 2026
Retailer 16£159 GBP
Retailer 20£178 GBP
Retailer 3£185 GBP
Retailer 9£197 GBP
Retailer 10£199 GBP
Retailer 4£244 GBP
Retailer 2£249 GBP
Retailer 19£271 GBP
Retailer 11£350 GBP
Retailer 7£360 GBP
Retailer 17£379 GBP
Retailer 6£449 GBP
Retailer 15£532 GBP
Retailer 14£574 GBP
Retailer 12£672 GBP
Retailer 8£680 GBP
Retailer 18£701 GBP
Retailer 13£874 GBP
Retailer 5£1,073 GBP
Do Amore Diamonds£1,528 GBP

20 data points across 20 retailers

15 retailers£159 GBP to £1,528 GBP

A
Cheapest Retailer
-
£159 GBP
$214 USD
A
Retailer 2
-
£178 GBP
$239 USD
View
Final sale: no returns
A
Retailer 3
-
£185 GBP
$248 USD
View
Retailer 4
-
£197 GBP
$264 USD
View
Price last confirmed 36 days ago
A
Retailer 5
-
£244 GBP
$327 USD
View
A
Retailer 6
-
£249 GBP
View
B+
Retailer 7
-
£271 GBP
$363 USD
View
Retailer 8
-
£350 GBP
ZAR 7,584 ZAR
View
Price last confirmed 37 days ago
B+
Retailer 9
-
£379 GBP
$508 USD
View
B
Retailer 10
-
£532 GBP
A$1,098 AUD
View
B
Retailer 11
-
£574 GBP
$770 USD
View
B
Retailer 12
-
£701 GBP
$941 USD
View
B
Retailer 13
-
£874 GBP
View
Retailer 14
-
£1,073 GBP
$1,440 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Do Amore Diamonds
27-A51561416 · Nov 2
£1,528 GBP
$2,050 USD
View
14 more retailers have this diamond
Prices start from £159 GBPSave up to £1,368 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
£159 GBP