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Oval|Lab Grown|IGI

2.57ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • IGI LG754533605

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG754533605

Diamond specifications and retailer prices

From £352 GBP
$468 USD
As of October 25, 2026
Save £2,831 GBP (89%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,183 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 2.57ct lab-grown oval diamond

This 2.57ct lab-grown oval sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG754533605 or 754533605. Listed at 20 retailers as of October 25, 2026, with prices from £352 to £3,183, a £2,831 spread on the same certified stone. Brilliant Earth lists it at £3,183. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.57
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754533605
Dimensions11.24 × 7.69 × 4.70 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.24 mm7.69 mm2.57 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG754533605
Side View
Table 58.0%Crown 36.9°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 61.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 25
Current: £3,183 GBP|Low: £236 GBP|High: £3,281 GBP|Avg: £942 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
Retailer 13
Retailer 14
October 26, 2026
Retailer 4£236 GBP
Retailer 12£322 GBP
Retailer 6£352 GBP
Retailer 9£384 GBP
Retailer 11£420 GBP
Retailer 2£452 GBP
Retailer 3£546 GBP
Retailer 8£648 GBP
Retailer 13£731 GBP
Retailer 14£879 GBP
Retailer 7£1,049 GBP
Retailer 5£1,091 GBP
Retailer 10£1,648 GBP
Brilliant Earth£3,183 GBP

35 data points across 14 retailers

20 retailers£352 GBP to £3,183 GBP

A
Retailer 1
-
£231 GBP
$307 USD
Price last confirmed 36 days ago
A
Retailer 2
-
£231 GBP
$307 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
£287 GBP
$381 USD
View
Price last confirmed 19 days ago
A
Retailer 4
-
£319 GBP
$424 USD
View
Price last confirmed 33 days ago
A
Retailer 5
-
£322 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£349 GBP
$464 USD
View
Price last confirmed 33 days ago
B+
Retailer 7
-
£352 GBP
$468 USD
View
A
Retailer 8
-
£384 GBP
$510 USD
View
A
Retailer 9
-
£420 GBP
€532 EUR
View
Price last confirmed 10 days ago
A
Retailer 10
-
£452 GBP
View
A
Retailer 11
-
£546 GBP
$726 USD
View
B+
Retailer 12
-
£628 GBP
$835 USD
View
Price last confirmed 7 days ago
B+
Retailer 13
-
£648 GBP
$861 USD
View
B+
Retailer 14
-
£731 GBP
$971 USD
View
B+
Retailer 15
-
£879 GBP
$1,167 USD
View
B+
Retailer 16
-
£922 GBP
$1,225 USD
View
Price last confirmed 19 days ago
B
Retailer 17
-
£1,049 GBP
View
B
Retailer 18
-
£1,091 GBP
$1,450 USD
View
B
Retailer 19
-
£1,648 GBP
$2,190 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
16844908A · Oct 26
£3,183 GBP
$4,230 USD
View
19 more retailers have this diamond
Prices start from £352 GBPSave up to £2,831 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
2.57ct Oval
£352 GBP