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Cushion|Lab Grown|IGI

1.21ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG850690159

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

Certificate IGI LG850690159

Diamond specifications and retailer prices

From $455 NZD
HK$2,000 HKD
As of November 1, 2026
Save $1,418 NZD (76%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,873 NZD at MOH London · As of November 2, 2026
View at MOH London

About this 1.21ct lab-grown cushion diamond

This 1.21ct 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 LG850690159 or 850690159. Listed at 8 retailers as of November 1, 2026, with prices from $455 to $1,873, a $1,418 spread on the same certified stone. MOH London lists it at $1,873. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850690159
Dimensions6.18 × 6.15 × 4.17 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.18 mm6.15 mm1.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850690159
Side View
Table 65.0%Crown 35.3°Girdle: STK-THKPavilion 41°Culet: NoneDepth 67.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,873 NZD|Low: $455 NZD|High: $1,873 NZD|Avg: $1,011 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 5$455 NZD
Retailer 3$687 NZD
Retailer 7$706 NZD
Retailer 2$723 NZD
Retailer 4$816 NZD
Retailer 8$1,349 NZD
Retailer 6$1,384 NZD
MOH London$1,873 NZD

4 data points across 8 retailers

8 retailers$455 NZD to $1,873 NZD

A
Cheapest Retailer
-
$455 NZD
HK$2,000 HKD
A
Retailer 2
-
$687 NZD
€368 EUR
View
A
Retailer 3
-
$706 NZD
$397 USD
View
A
Retailer 4
-
$723 NZD
£320 GBP
View
A
Retailer 5
-
$816 NZD
$459 USD
View
B+
Retailer 6
-
$1,349 NZD
$759 USD
View
B+
Retailer 7
-
$1,384 NZD
$779 USD
View
Most Expensive
B
MOH London
LG850690159 · Nov 2
$1,873 NZD
£830 GBP
View
7 more retailers have this diamond
Prices start from $455 NZDSave up to $1,418 NZD

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
1.21ct Cushion
$455 NZD