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Round|Lab Grown|IGI

2.56ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG841674900

Shape and cutting style on the report: Round brilliant

Certificate IGI LG841674900

Diamond specifications and retailer prices

From $327 USD
As of November 1, 2026
Save $1,793 USD (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,120 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.56ct lab-grown round diamond

This 2.56ct 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 LG841674900 or 841674900. Listed at 20 retailers as of October 31, 2026, with prices from $327 to $2,120, a $1,793 spread on the same certified stone. Brilliant Earth lists it at $2,120. 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

2.56
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841674900
Dimensions8.90 × 8.94 × 5.23 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.90 mm8.94 mm2.56 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841674900
Side View
Table 61.0%Crown 32.7°Girdle: MediumPavilion 40.3°Culet: NoneDepth 58.6%

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: Nov 1
Current: $2,120 USD|Low: $327 USD|High: $3,220 USD|Avg: $917 USD|-0.5%
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
Retailer 20
November 2, 2026
Retailer 6$327 USD
Retailer 8$365 USD
Retailer 10$379 USD
Retailer 12$406 USD
Retailer 18$406 USD
Retailer 19$448 USD
Retailer 17$615 USD
Retailer 15$630 USD
Retailer 4$657 USD
Retailer 14$666 USD
Retailer 20$704 USD
Retailer 2$723 USD
Retailer 7$808 USD
Retailer 16$975 USD
Retailer 11$1,296 USD
Retailer 3$1,304 USD
Retailer 9$1,348 USD
Retailer 5$1,599 USD
Retailer 13$1,626 USD
Brilliant Earth$2,120 USD

32 data points across 20 retailers

20 retailers$327 USD to $2,120 USD

A
Cheapest Retailer
-
$327 USD
A
Retailer 2
-
$365 USD
View
Final sale: no returns
A
Retailer 3
-
$379 USD
View
Retailer 4
-
$406 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$406 USD
View
A
Retailer 6
-
$448 USD
HK$3,500 HKD
View
A
Retailer 7
-
$615 USD
View
A
Retailer 8
-
$630 USD
€600 EUR
View
B+
Retailer 9
-
$657 USD
View
A
Retailer 10
-
$666 USD
£524 GBP
View
A
Retailer 11
-
$704 USD
View
A
Retailer 12
-
$723 USD
£570 GBP
View
A
Retailer 13
-
$808 USD
View
B+
Retailer 14
-
$975 USD
View
B+
Retailer 15
-
$1,296 USD
SGD 1,752 SGD
View
B+
Retailer 16
-
$1,304 USD
View
B
Retailer 17
-
$1,348 USD
View
B
Retailer 18
-
$1,599 USD
View
B
Retailer 19
-
$1,626 USD
£1,280 GBP
View
Most Expensive
B
Brilliant Earth
21666461A · Oct 31
$2,120 USD
View
19 more retailers have this diamond
Prices start from $327 USDSave up to $1,793 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
2.56ct Round
$327 USD