Cushion|Lab Grown|IGI

1.00ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG823691753

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

Certificate IGI LG823691753

Diamond specifications and retailer prices

From $140 USD
As of October 30, 2026
Save $1,173 USD (89%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,313 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG823691753 or 823691753. Listed at 8 retailers as of October 29, 2026, with prices from $140 to $1,313, a $1,173 spread on the same certified stone. MOH London lists it at $1,313. 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

1.00
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823691753
Dimensions5.80 × 5.74 × 3.64 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
5.80 mm5.74 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823691753
Side View
Table 71.0%Crown 35.8°Girdle: STK-THKPavilion 38.1°Culet: NoneDepth 63.4%

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: Oct 30
Current: $1,313 USD|Low: $103 USD|High: $1,322 USD|Avg: $494 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 7$140 USD
Retailer 5$212 USD
Retailer 2$258 USD
Retailer 3$297 USD
Retailer 4$307 USD
Retailer 6$560 USD
Retailer 8$958 USD
MOH London$1,313 USD

42 data points across 8 retailers

8 retailers$140 USD to $1,313 USD

A
Cheapest Retailer
-
$140 USD
Final sale: no returns
B+
Retailer 2
-
$212 USD
View
A
Retailer 3
-
$258 USD
£203 GBP
View
A
Retailer 4
-
$297 USD
£234 GBP
View
A
Retailer 5
-
$307 USD
View
B
Retailer 6
-
$560 USD
View
B
Retailer 7
-
$958 USD
View
Most Expensive
B
MOH London
LG823691753 · Oct 29
$1,313 USD
£1,034 GBP
View
7 more retailers have this diamond
Prices start from $140 USDSave up to $1,173 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
1.00ct Cushion
$140 USD