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Marquise|Lab Grown|IGI

12.57ct G VVS2 Marquise Lab Grown Diamond

ID • G/VVS2 • IGI LG803668273

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG803668273

Diamond specifications and retailer prices

From £1,592 GBP
$2,137 USD
As of November 1, 2026
Save £2,310 GBP (59%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,903 GBP at Brilliance · As of November 1, 2026
View at Brilliance

About this 12.57ct lab-grown marquise diamond

This 12.57ct lab-grown marquise sits in the over five carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG803668273 or 803668273. Listed at 3 retailers as of November 1, 2026, with prices from £1,592 to £3,903, a £2,310 spread on the same certified stone. Brilliance lists it at £3,903. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

12.57
Carat
G
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803668273
Dimensions24.07 × 12.36 × 7.49 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
24.07 mm12.36 mm12.57 ctG / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803668273
Side View
Table 60.0%Crown 35.4°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,903 GBP|Low: £1,592 GBP|High: £18,697 GBP|Avg: £6,489 GBP|-15.1%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 27, 2026
Retailer 2£1,592 GBP
Retailer 3£2,119 GBP
Retailer 7£2,300 GBP
Brilliance£3,903 GBP
Retailer 6£4,518 GBP
Retailer 4£8,357 GBP
Retailer 5£18,697 GBP

11 data points across 7 retailers

3 retailers£1,592 GBP to £3,903 GBP

A
Cheapest Retailer
-
£1,592 GBP
$2,137 USD
Final sale: no returns
B+
Retailer 2
-
£2,119 GBP
$2,843 USD
View
Most Expensive
B+
Brilliance
D43560224 · Nov 1
£3,903 GBP
$5,237 USD
View
2 more retailers have this diamond
Prices start from £1,592 GBPSave up to £2,310 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
12.57ct Marquise
£1,592 GBP