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Round|Lab Grown|IGI

2.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG847646141

Certificate IGI LG847646141

Diamond specifications and retailer prices

From $572 USD
€545 EUR
As of October 29, 2026
Save $933 USD (62%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,505 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG847646141 or 847646141. Listed at 3 retailers as of October 29, 2026, with prices from $572 to $1,505, a $933 spread on the same certified stone. Rare Carat lists it at $1,505. 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
OriginLab Grown
Grading LabIGI
CertificateIGI LG847646141
Dimensions8.72 × 8.70 × 5.34 mm
L/W Ratio1.00
Top View
8.72 mm8.70 mm2.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847646141
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.3%

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: $572 USD|Low: $572 USD|High: $783 USD|Avg: $718 USD|-5.2%
Retailer 1
Retailer 2
October 29, 2026
Retailer 1$572 USD
Retailer 2$783 USD

4 data points across 2 retailers

3 retailers$572 USD to $1,505 USD

A
Cheapest Retailer
-
$572 USD
€545 EUR
B+
Retailer 2
-
$783 USD
View
Most Expensive
B
Rare Carat
46S847646141 · Nov 1
$1,505 USD
View
2 more retailers have this diamond
Prices start from $572 USDSave up to $933 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
$572 USD