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Round|Lab Grown|IGI

2.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG768679965

Shape and cutting style on the report: Round brilliant

Certificate IGI LG768679965

Diamond specifications and retailer prices

From $286 USD
As of October 29, 2026
Save $1,157 USD (80%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $1,443 USD at Reve Diamonds · As of November 2, 2026
View at Reve Diamonds

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG768679965 or 768679965. Listed at 30 retailers as of October 29, 2026, with prices from $286 to $1,443, a $1,157 spread on the same certified stone. Reve Diamonds lists it at $1,443. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768679965
Dimensions8.67 × 8.63 × 5.38 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
8.67 mm8.63 mm2.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768679965
Side View
Table 59.0%Crown 35.4°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.2%

Caratlytics Score

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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: $764 USD|Low: $311 USD|High: $1,491 USD|Avg: $823 USD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Reve Diamonds
November 2, 2026
Retailer 6$311 USD
Retailer 9$354 USD
Retailer 4$568 USD
Retailer 8$585 USD
Retailer 5$606 USD
Retailer 10$655 USD
Retailer 1$764 USD
Retailer 3$1,059 USD
Retailer 2$1,188 USD
Retailer 7$1,420 USD
Reve Diamonds$1,443 USD

41 data points across 11 retailers

30 retailers$286 USD to $1,443 USD

Retailer 1
-
$282 USD
Price last confirmed 31 days ago
Retailer 2
-
$282 USD
View
Price last confirmed 29 days ago
A
Retailer 3
-
$286 USD
View
Retailer 4
-
$286 USD
View
Price last confirmed 10 days ago
Retailer 5
-
$289 USD
View
Price last confirmed 12 days ago
Retailer 6
-
$293 USD
View
Price last confirmed 22 days ago
A
Retailer 7
-
$311 USD
View
Final sale: no returns
A
Retailer 8
-
$331 USD
View
Retailer 9
-
$340 USD
View
Price last confirmed 27 days ago
Retailer 10
-
$340 USD
View
Price last confirmed 24 days ago
Retailer 11
-
$340 USD
View
Price last confirmed 30 days ago
Retailer 12
-
$354 USD
View
Price last confirmed 8 days ago
A
Retailer 13
-
$354 USD
View
Retailer 14
-
$359 USD
View
Price last confirmed 41 days ago
Retailer 15
-
$359 USD
View
Price last confirmed 12 days ago
Retailer 16
-
$364 USD
View
Price last confirmed 28 days ago
Retailer 17
-
$364 USD
View
Price last confirmed 30 days ago
Retailer 18
-
$364 USD
View
Price last confirmed 26 days ago
B+
Retailer 19
-
$568 USD
View
A
Retailer 20
-
$585 USD
View
A
Retailer 21
-
$606 USD
£477 GBP
View
A
Retailer 22
-
$655 USD
View
A
Retailer 23
-
$764 USD
View
B+
Retailer 24
-
$1,059 USD
View
B
Retailer 25
-
$1,139 USD
View
Retailer 26
-
$1,169 USD
View
Price last confirmed 42 days ago
Retailer 27
-
$1,169 USD
View
Price last confirmed 26 days ago
B
Retailer 28
-
$1,188 USD
View
B
Retailer 29
-
$1,420 USD
£1,118 GBP
View
Most Expensive
B
Reve Diamonds
675F98263 · Nov 2
$1,443 USD
View
29 more retailers have this diamond
Prices start from $286 USDSave up to $1,157 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
$286 USD