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Cushion|Lab Grown|IGI

1.23ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG805666650

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG805666650

Diamond specifications and retailer prices

From €226 EUR
$252 USD
As of November 1, 2026
Save €947 EUR (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,173 EUR at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG805666650 or 805666650. Listed at 16 retailers as of October 28, 2026, with prices from €226 to €1,173, a €947 spread on the same certified stone. Brilliant Earth lists it at €1,173. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805666650
Dimensions6.41 × 6.21 × 4.02 mm
L/W Ratio1.03
Girdle conditionFaceted
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
6.41 mm6.21 mm1.23 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805666650
Side View
Table 60.0%Crown 35.6°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 64.7%

Caratlytics Score

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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: €1,173 EUR|Low: €104 EUR|High: €1,173 EUR|Avg: €496 EUR
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
November 2, 2026
Retailer 9€104 EUR
Retailer 6€217 EUR
Retailer 11€226 EUR
Retailer 14€289 EUR
Retailer 15€360 EUR
Retailer 12€373 EUR
Retailer 17€378 EUR
Retailer 2€395 EUR
Retailer 16€427 EUR
Retailer 8€504 EUR
Retailer 10€525 EUR
Retailer 7€529 EUR
Retailer 5€644 EUR
Retailer 4€672 EUR
Retailer 3€743 EUR
Retailer 13€1,011 EUR
Retailer 18€1,054 EUR
Brilliant Earth€1,173 EUR

19 data points across 18 retailers

16 retailers€226 EUR to €1,173 EUR

Retailer 1
-
€217 EUR
$242 USD
Price last confirmed 8 days ago
A
Retailer 2
-
€226 EUR
$252 USD
View
Final sale: no returns
A
Retailer 3
-
€289 EUR
£254 GBP
View
A
Retailer 4
-
€360 EUR
View
A
Retailer 5
-
€373 EUR
ZAR 6,737 ZAR
View
A
Retailer 6
-
€378 EUR
$422 USD
View
A
Retailer 7
-
€395 EUR
£347 GBP
View
A
Retailer 8
-
€427 EUR
$477 USD
View
B+
Retailer 9
-
€504 EUR
$563 USD
View
Retailer 10
-
€529 EUR
A$910 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
€644 EUR
$720 USD
View
B+
Retailer 12
-
€672 EUR
A$1,155 AUD
View
B+
Retailer 13
-
€743 EUR
$830 USD
View
B
Retailer 14
-
€1,011 EUR
£889 GBP
View
B
Retailer 15
-
€1,054 EUR
$1,177 USD
View
Most Expensive
B
Brilliant Earth
20079125A · Oct 28
€1,173 EUR
$1,310 USD
View
15 more retailers have this diamond
Prices start from €226 EURSave up to €947 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
€226 EUR