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Round|Lab Grown|IGI

1.56ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG821640683

Shape and cutting style on the report: Round brilliant

Certificate IGI LG821640683

Diamond specifications and retailer prices

From $595 USD
As of November 1, 2026
Save $2,765 USD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,360 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.56ct lab-grown round diamond

This 1.56ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821640683 or 821640683. Listed at 11 retailers as of October 31, 2026, with prices from $595 to $3,360, a $2,765 spread on the same certified stone. Brilliant Earth lists it at $3,360. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.56
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821640683
Dimensions7.47 × 7.43 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.47 mm7.43 mm1.56 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821640683
Side View
Table 57.0%Crown 33°Girdle: MediumPavilion 41.3°Culet: NoneDepth 61.7%

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: $3,360 USD|Low: $595 USD|High: $3,360 USD|Avg: $1,184 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7$595 USD
Retailer 3$701 USD
Retailer 2$792 USD
Retailer 8$924 USD
Retailer 4$1,387 USD
Retailer 9$1,470 USD
Retailer 5$1,748 USD
Retailer 6$1,970 USD
Brilliant Earth$3,360 USD

42 data points across 9 retailers

11 retailers$595 USD to $3,360 USD

A
Cheapest Retailer
-
$595 USD
A
Retailer 2
-
$701 USD
€668 EUR
View
A
Retailer 3
-
$792 USD
£624 GBP
View
B+
Retailer 4
-
$924 USD
View
B+
Retailer 5
-
$1,387 USD
A$2,134 AUD
View
B
Retailer 6
-
$1,470 USD
View
B+
Retailer 7
-
$1,748 USD
£1,376 GBP
View
B
Retailer 8
-
$1,892 USD
View
Retailer 9
-
$1,970 USD
View
Price last confirmed 14 days ago
Retailer 10
-
$1,970 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
22200268A · Oct 31
$3,360 USD
View
10 more retailers have this diamond
Prices start from $595 USDSave up to $2,765 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
1.56ct Round
$595 USD