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Round|Lab Grown|IGI

2.56ct J VS1 Round Lab Grown Diamond

EX • J/VS1 • IGI LG450050158

Shape and cutting style on the report: Round brilliant

Certificate IGI LG450050158

Diamond specifications and retailer prices

From £254 GBP
$340 USD
As of October 29, 2026
Save £1,866 GBP (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,120 GBP at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 2.56ct lab-grown round diamond

This 2.56ct lab-grown round sits in the two to three carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG450050158 or 450050158. Listed at 15 retailers as of October 29, 2026, with prices from £254 to £2,120, a £1,866 spread on the same certified stone. Do Amore Diamonds lists it at £2,120. 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

2.56
Carat
J
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG450050158
Dimensions8.75 × 8.80 × 5.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
8.75 mm8.80 mm2.56 ctJ / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG450050158
Side View
Table 61.0%Crown 34.1°Girdle: Slightly ThickPavilion 40.5°Culet: NoneDepth 60.3%

Caratlytics Score

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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: Oct 29
Current: £2,120 GBP|Low: £244 GBP|High: £16,049 GBP|Avg: £1,703 GBP|-6.0%
Do Amore Diamonds
Retailer 2
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Retailer 18
November 1, 2026
Retailer 4£254 GBP
Retailer 15£277 GBP
Retailer 5£284 GBP
Retailer 13£296 GBP
Retailer 6£315 GBP
Retailer 16£394 GBP
Retailer 2£410 GBP
Retailer 8£636 GBP
Retailer 11£640 GBP
Retailer 7£757 GBP
Retailer 18£839 GBP
Retailer 3£924 GBP
Retailer 14£1,049 GBP
Retailer 12£1,167 GBP
Retailer 17£1,366 GBP
Do Amore Diamonds£2,120 GBP
Retailer 10£2,289 GBP
Retailer 9£16,049 GBP

30 data points across 18 retailers

15 retailers£254 GBP to £2,120 GBP

A
Cheapest Retailer
-
£254 GBP
$340 USD
A
Retailer 2
-
£277 GBP
$371 USD
View
A
Retailer 3
-
£284 GBP
$381 USD
View
Final sale: no returns
A
Retailer 4
-
£296 GBP
$396 USD
View
A
Retailer 5
-
£315 GBP
$422 USD
View
B+
Retailer 6
-
£394 GBP
$528 USD
View
A
Retailer 7
-
£410 GBP
$550 USD
View
A
Retailer 8
-
£640 GBP
$857 USD
View
A
Retailer 9
-
£757 GBP
$1,014 USD
View
A
Retailer 10
-
£839 GBP
ZAR 18,156 ZAR
View
A
Retailer 11
-
£924 GBP
$1,238 USD
View
A
Retailer 12
-
£1,049 GBP
$1,406 USD
View
A
Retailer 13
-
£1,167 GBP
$1,564 USD
View
A
Retailer 14
-
£1,366 GBP
View
Most Expensive
B+
Do Amore Diamonds
27-BE5799129 · Nov 1
£2,120 GBP
$2,840 USD
View
14 more retailers have this diamond
Prices start from £254 GBPSave up to £1,866 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
2.56ct Round
£254 GBP