CaratHunter
Plans
Oval|Lab Grown|IGI

2.51ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG843607238

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG843607238

Diamond specifications and retailer prices

From £228 GBP
$305 USD
As of October 29, 2026
Save £2,183 GBP (91%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,411 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.51ct lab-grown oval diamond

This 2.51ct 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 LG843607238 or 843607238. Listed at 18 retailers as of October 29, 2026, with prices from £228 to £2,411, a £2,183 spread on the same certified stone. Brilliant Earth lists it at £2,411. 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

2.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843607238
Dimensions11.56 × 7.42 × 4.51 mm
L/W Ratio1.56
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.56 mm7.42 mm2.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843607238
Side View
Table 63.0%Crown 36.8°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 60.8%

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: Oct 29
Current: £2,411 GBP|Low: £224 GBP|High: £3,090 GBP|Avg: £732 GBP|-22.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 16£228 GBP
Retailer 9£255 GBP
Retailer 8£264 GBP
Retailer 3£282 GBP
Retailer 19£282 GBP
Retailer 2£347 GBP
Retailer 18£388 GBP
Retailer 15£399 GBP
Retailer 11£486 GBP
Retailer 12£502 GBP
Retailer 5£505 GBP
Retailer 7£702 GBP
Retailer 17£867 GBP
Retailer 6£908 GBP
Retailer 10£943 GBP
Retailer 13£1,137 GBP
Retailer 4£1,141 GBP
Retailer 14£1,642 GBP
Brilliant Earth£2,411 GBP

26 data points across 19 retailers

18 retailers£228 GBP to £2,411 GBP

A
Cheapest Retailer
-
£228 GBP
$305 USD
A
Retailer 2
-
£255 GBP
$342 USD
View
Final sale: no returns
A
Retailer 3
-
£264 GBP
$354 USD
View
A
Retailer 4
-
£282 GBP
$378 USD
View
A
Retailer 5
-
£282 GBP
$378 USD
View
A
Retailer 6
-
£347 GBP
View
B+
Retailer 7
-
£388 GBP
$520 USD
View
A
Retailer 8
-
£399 GBP
$535 USD
View
A
Retailer 9
-
£502 GBP
View
A
Retailer 10
-
£505 GBP
$677 USD
View
B+
Retailer 11
-
£702 GBP
$940 USD
View
B
Retailer 12
-
£867 GBP
$1,162 USD
View
B+
Retailer 13
-
£908 GBP
$1,216 USD
View
B+
Retailer 14
-
£943 GBP
$1,263 USD
View
B
Retailer 15
-
£1,137 GBP
View
B
Retailer 16
-
£1,141 GBP
$1,529 USD
View
B
Retailer 17
-
£1,642 GBP
$2,200 USD
View
Most Expensive
B
Brilliant Earth
21699557A · Oct 30
£2,411 GBP
$3,230 USD
View
17 more retailers have this diamond
Prices start from £228 GBPSave up to £2,183 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
2.51ct Oval
£228 GBP