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Oval|Lab Grown|IGI

2.55ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG739575965

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG739575965

Diamond specifications and retailer prices

From £237 GBP
$316 USD
As of October 30, 2026
Save £2,917 GBP (92%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,154 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 2.55ct lab-grown oval diamond

This 2.55ct lab-grown oval sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG739575965 or 739575965. Listed at 5 retailers as of October 28, 2026, with prices from £237 to £3,154, a £2,917 spread on the same certified stone. Brilliant Earth lists it at £3,154. 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

2.55
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739575965
Dimensions10.87 × 7.32 × 4.91 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.87 mm7.32 mm2.55 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739575965
Side View
Table 62.0%Crown 39.7°Girdle: STK-THKPavilion 41.4°Culet: NoneDepth 67.1%

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: Oct 30
Current: £3,154 GBP|Low: £188 GBP|High: £3,252 GBP|Avg: £901 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 18, 2026
Retailer 3£188 GBP
Retailer 7£237 GBP
Retailer 8£406 GBP
Retailer 12£500 GBP
Retailer 11£606 GBP
Retailer 10£681 GBP
Retailer 9£725 GBP
Retailer 6£743 GBP
Retailer 5£747 GBP
Retailer 4£1,168 GBP
Retailer 2£1,641 GBP
Brilliant Earth£3,154 GBP

9 data points across 12 retailers

5 retailers£237 GBP to £3,154 GBP

A
Cheapest Retailer
-
£237 GBP
$316 USD
Final sale: no returns
B+
Retailer 2
-
£743 GBP
$990 USD
View
B
Retailer 3
-
£747 GBP
$995 USD
View
B
Retailer 4
-
£1,641 GBP
$2,185 USD
View
Most Expensive
C
Brilliant Earth
16691136A · Oct 28
£3,154 GBP
$4,200 USD
View
4 more retailers have this diamond
Prices start from £237 GBPSave up to £2,917 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
2.55ct Oval
£237 GBP