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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 €232 EUR
$260 USD
As of November 1, 2026
Save €428 EUR (65%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €934 EUR 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 1, 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 1
Current: €294 EUR|Low: €153 EUR|High: €998 EUR|Avg: €502 EUR|-6.8%
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
October 31, 2026
Retailer 3€153 EUR
Retailer 4€232 EUR
Retailer 1€294 EUR
Retailer 10€296 EUR
Retailer 9€332 EUR
Retailer 6€381 EUR
Retailer 5€415 EUR
Retailer 2€462 EUR
Retailer 8€553 EUR
Retailer 12€598 EUR
Retailer 7€660 EUR
Retailer 11€798 EUR
Reve Diamonds€934 EUR

40 data points across 13 retailers

15 retailers€232 EUR to €660 EUR

B+
Cheapest Retailer
-
€232 EUR
$260 USD
A
Retailer 2
-
€294 EUR
View
A
Retailer 3
-
€296 EUR
£262 GBP
View
A
Retailer 4
-
€332 EUR
£294 GBP
View
Retailer 5
-
€343 EUR
£303 GBP
View
Price last confirmed 21 days ago
B+
Retailer 6
-
€381 EUR
$427 USD
View
B+
Retailer 7
-
€415 EUR
$465 USD
View
Retailer 8
-
€426 EUR
$478 USD
View
Price last confirmed 7 days ago
Retailer 9
-
€462 EUR
$518 USD
View
Price last confirmed 7 days ago
Retailer 10
-
€548 EUR
$615 USD
View
Price last confirmed 39 days ago
B+
Retailer 11
-
€553 EUR
$620 USD
View
B
Retailer 12
-
€598 EUR
$670 USD
View
B
Retailer 13
-
€660 EUR
$740 USD
View
Retailer 14
-
€798 EUR
£705 GBP
View
Price last confirmed 7 days ago
Most Expensive
Reve Diamonds
E41CDD5BE · Oct 25
€934 EUR
$1,048 USD
View
Price last confirmed 8 days ago
14 more retailers have this diamond
Prices start from €232 EURSave up to €428 EUR

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
€232 EUR