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Cushion|Lab Grown|IGI

1.23ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG801682433

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG801682433

Diamond specifications and retailer prices

From $260 USD
As of November 6, 2026
Save $480 USD (65%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,048 USD at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG801682433 or 801682433. Listed at 15 retailers as of November 6, 2026, with a 185% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.23
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801682433
Dimensions6.71 × 5.53 × 4.06 mm
L/W Ratio1.21
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.71 mm5.53 mm1.23 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG801682433
Side View
Table 64.0%Crown 38°Girdle: STK-VTKPavilion 36.2°Culet: NoneDepth 73.4%

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 6
Current: $328 USD|Low: $172 USD|High: $1,119 USD|Avg: $567 USD|-7.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 6, 2026
Retailer 3$172 USD
Retailer 4$260 USD
Retailer 1$328 USD
Retailer 10$332 USD
Retailer 9$372 USD
Retailer 6$427 USD
Retailer 5$465 USD
Retailer 2$518 USD
Retailer 8$620 USD
Retailer 12$670 USD
Retailer 7$740 USD
Retailer 11$895 USD
Reve Diamonds$1,048 USD

37 data points across 13 retailers

15 retailers$260 USD to $740 USD

B+
Cheapest Retailer
-
$260 USD
A
Retailer 2
-
$328 USD
View
Retailer 3
-
$332 USD
View
Price last confirmed 11 days ago
Retailer 4
-
$372 USD
View
Price last confirmed 10 days ago
Retailer 5
-
$384 USD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
$427 USD
View
B+
Retailer 7
-
$465 USD
View
Retailer 8
-
$478 USD
View
Price last confirmed 12 days ago
Retailer 9
-
$518 USD
View
Price last confirmed 12 days ago
Retailer 10
-
$615 USD
View
Price last confirmed 44 days ago
B+
Retailer 11
-
$620 USD
View
Retailer 12
-
$670 USD
View
Price last confirmed 11 days ago
B
Retailer 13
-
$740 USD
View
Retailer 14
-
$895 USD
View
Price last confirmed 12 days ago
Most Expensive
Reve Diamonds
E41CDD5BE · Oct 25
$1,048 USD
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from $260 USDSave up to $480 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
1.23ct Cushion
$260 USD