CaratHunter
Plans
Heart|Lab Grown|IGI

1.23ct D VS1 Heart Lab Grown Diamond

ID • D/VS1 • IGI LG813625553

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG813625553

Diamond specifications and retailer prices

From £146 GBP
As of November 4, 2026
Save £683 GBP (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £829 GBP at Reve Diamonds · As of November 4, 2026
View at Reve 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG813625553 or 813625553. Listed at 21 retailers as of November 4, 2026, with prices from £146 to £829, a £683 spread on the same certified stone. Reve Diamonds lists it at £829. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.3°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813625553
Dimensions7.10 × 6.78 × 4.38 mm
L/W Ratio1.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.10 mm6.78 mm1.23 ctD / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG813625553
Side View
Table 60.0%Crown 37.3°Girdle: STK-THKPavilion 41.3°Culet: NoneDepth 61.7%

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 4
Current: £288 GBP|Low: £146 GBP|High: £993 GBP|Avg: £444 GBP|-4.7%
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 5, 2026
Retailer 7£146 GBP
Retailer 2£180 GBP
Retailer 14£269 GBP
Retailer 5£282 GBP
Retailer 10£287 GBP
Retailer 1£288 GBP
Retailer 6£351 GBP
Retailer 12£356 GBP
Retailer 3£529 GBP
Retailer 13£538 GBP
Retailer 9£551 GBP
Retailer 8£561 GBP
Retailer 11£622 GBP
Retailer 4£783 GBP
Reve Diamonds£829 GBP

41 data points across 15 retailers

21 retailers£146 GBP to £829 GBP

Retailer 1
-
£135 GBP
Price last confirmed 19 days ago
A
Retailer 2
-
£146 GBP
View
Final sale: no returns
Retailer 3
-
£156 GBP
View
Price last confirmed 21 days ago
Retailer 4
-
£167 GBP
View
Price last confirmed 24 days ago
A
Retailer 5
-
£180 GBP
View
A
Retailer 6
-
£269 GBP
View
Retailer 7
-
£282 GBP
View
Price last confirmed 13 days ago
B+
Retailer 8
-
£287 GBP
View
A
Retailer 9
-
£288 GBP
View
Retailer 10
-
£351 GBP
View
Price last confirmed 10 days ago
B+
Retailer 11
-
£356 GBP
View
B+
Retailer 12
-
£413 GBP
View
B+
Retailer 13
-
£529 GBP
View
B
Retailer 14
-
£538 GBP
View
Retailer 15
-
£538 GBP
View
Price last confirmed 20 days ago
B
Retailer 16
-
£551 GBP
View
B
Retailer 17
-
£556 GBP
View
B
Retailer 18
-
£561 GBP
View
B
Retailer 19
-
£622 GBP
View
Retailer 20
-
£783 GBP
View
Price last confirmed 11 days ago
Most Expensive
B
Reve Diamonds
68F0DAAE4 · Nov 4
£829 GBP
$1,119 USD
View
20 more retailers have this diamond
Prices start from £146 GBPSave up to £683 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
£146 GBP