Oval|Lab Grown|IGI

2.55ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG843606127

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG843606127

Diamond specifications and retailer prices

From $515 USD
As of October 29, 2026
Save $2,655 USD (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,600 USD at Brilliant Earth · As of October 20, 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 top-tier cut grade and certified by IGI LG843606127 or 843606127. Listed at 14 retailers as of October 29, 2026, with a 516% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.55
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843606127
Dimensions11.28 × 7.67 × 4.78 mm
L/W Ratio1.47
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.28 mm7.67 mm2.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843606127
Side View
Table 58.0%Crown 36.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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 29
Current: $600 USD|Low: $405 USD|High: $3,170 USD|Avg: $1,042 USD|+13.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 4$405 USD
Retailer 7$515 USD
Retailer 10$588 USD
Retailer 1$600 USD
Retailer 3$681 USD
Retailer 2$761 USD
Retailer 12$777 USD
Retailer 9$1,297 USD
Retailer 8$1,342 USD
Retailer 13$1,450 USD
Retailer 5$1,695 USD
Retailer 6$2,205 USD
Retailer 11$3,170 USD

23 data points across 13 retailers

14 retailers$515 USD to $3,170 USD

A
Cheapest Retailer
-
$515 USD
B+
Retailer 2
-
$588 USD
View
A
Retailer 3
-
$600 USD
£472 GBP
View
Retailer 4
-
$761 USD
£599 GBP
View
Price last confirmed 13 days ago
A
Retailer 5
-
$777 USD
View
B
Retailer 6
-
$1,297 USD
View
B
Retailer 7
-
$1,342 USD
View
B
Retailer 8
-
$1,450 USD
View
Retailer 9
-
$1,695 USD
£1,335 GBP
View
Price last confirmed 19 days ago
B
Retailer 10
-
$2,205 USD
View
Retailer 11
-
$2,520 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
$2,730 USD
View
B
Retailer 13
-
$3,170 USD
View
Most Expensive
Brilliant Earth
21795752A · Oct 20
$3,600 USD
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from $515 USDSave up to $2,655 USD

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
$515 USD