CaratHunter
Plans
Round|Lab Grown|IGI

1.23ct G VVS1 Round Lab Grown Diamond

EX • G/VVS1 • IGI LG783647534

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783647534

Diamond specifications and retailer prices

From £138 GBP
As of November 3, 2026
Save £713 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £851 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG783647534 or 783647534. Listed at 17 retailers as of November 3, 2026, with prices from £138 to £851, a £713 spread on the same certified stone. Reve Diamonds lists it at £851. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
G
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783647534
Dimensions7.01 × 7.05 × 4.07 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.01 mm7.05 mm1.23 ctG / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783647534
Side View
Table 61.0%Crown 32.4°Girdle: MediumPavilion 40.3°Culet: NoneDepth 58.0%

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 3
Current: £305 GBP|Low: £138 GBP|High: £895 GBP|Avg: £378 GBP|-5.7%
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
Retailer 15
Retailer 16
Reve Diamonds
November 5, 2026
Retailer 7£138 GBP
Retailer 5£153 GBP
Retailer 2£160 GBP
Retailer 4£170 GBP
Retailer 14£171 GBP
Retailer 10£284 GBP
Retailer 12£294 GBP
Retailer 6£301 GBP
Retailer 1£305 GBP
Retailer 15£338 GBP
Retailer 3£354 GBP
Retailer 11£416 GBP
Retailer 16£549 GBP
Retailer 13£580 GBP
Retailer 8£588 GBP
Retailer 9£796 GBP
Reve Diamonds£851 GBP

24 data points across 17 retailers

17 retailers£138 GBP to £851 GBP

A
Cheapest Retailer
-
£138 GBP
A
Retailer 2
-
£153 GBP
View
Final sale: no returns
A
Retailer 3
-
£160 GBP
View
A
Retailer 4
-
£170 GBP
View
A
Retailer 5
-
£284 GBP
View
A
Retailer 6
-
£294 GBP
View
B+
Retailer 7
-
£301 GBP
View
B+
Retailer 8
-
£305 GBP
View
B+
Retailer 9
-
£338 GBP
View
B+
Retailer 10
-
£354 GBP
View
B+
Retailer 11
-
£416 GBP
View
Retailer 12
-
£499 GBP
View
Price last confirmed 101 days ago
B
Retailer 13
-
£549 GBP
View
B
Retailer 14
-
£580 GBP
View
B
Retailer 15
-
£588 GBP
View
B
Retailer 16
-
£796 GBP
View
Most Expensive
B
Reve Diamonds
35ED1B08C · Nov 4
£851 GBP
$1,149 USD
View
16 more retailers have this diamond
Prices start from £138 GBPSave up to £713 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 Round
£138 GBP