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Round|Lab Grown|IGI

2.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG750526910

Shape and cutting style on the report: Round brilliant

Certificate IGI LG750526910

Diamond specifications and retailer prices

From $515 USD
As of November 1, 2026
Save $1,235 USD (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,750 USD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round 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 LG750526910 or 750526910. Listed at 7 retailers as of November 1, 2026, with prices from $515 to $1,750, a $1,235 spread on the same certified stone. Rare Carat lists it at $1,750. 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

2.51
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750526910
Dimensions8.78 × 8.76 × 5.34 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.78 mm8.76 mm2.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750526910
Side View
Table 59.0%Crown 32.9°Girdle: MediumPavilion 41.3°Culet: NoneDepth 60.9%

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: Nov 1
Current: $1,750 USD|Low: $515 USD|High: $1,785 USD|Avg: $969 USD|-2.0%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 5$515 USD
Retailer 4$611 USD
Retailer 3$679 USD
Retailer 6$681 USD
Retailer 7$975 USD
Retailer 2$1,533 USD
Rare Carat$1,750 USD

41 data points across 7 retailers

7 retailers$515 USD to $1,750 USD

B+
Cheapest Retailer
-
$515 USD
A
Retailer 2
-
$611 USD
€582 EUR
View
A
Retailer 3
-
$679 USD
£534 GBP
View
A
Retailer 4
-
$681 USD
View
B+
Retailer 5
-
$975 USD
View
B
Retailer 6
-
$1,533 USD
£1,207 GBP
View
Most Expensive
B
Rare Carat
SM5125-28B_l_750526910 · Nov 1
$1,750 USD
View
6 more retailers have this diamond
Prices start from $515 USDSave up to $1,235 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
2.51ct Round
$515 USD