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Cushion|Lab Grown|IGI

1.02ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG851654220

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG851654220

Diamond specifications and retailer prices

From $444 NZD
$250 USD
As of November 1, 2026
Save $704 NZD (61%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,148 NZD at Taylor and Hart · As of November 1, 2026
View at Taylor and Hart

About this 1.02ct lab-grown cushion diamond

This 1.02ct 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 LG851654220 or 851654220. Listed at 6 retailers as of November 1, 2026, with prices from $444 to $1,148, a $704 spread on the same certified stone. Taylor and Hart lists it at $1,148. 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

1.02
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851654220
Dimensions7.14 × 4.97 × 3.31 mm
L/W Ratio1.44
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.14 mm4.97 mm1.02 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851654220
Side View
Table 62.0%Crown 38.3°Girdle: STK-VTKPavilion 35.8°Culet: NoneDepth 66.6%

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: $566 NZD|Low: $444 NZD|High: $1,148 NZD|Avg: $695 NZD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Taylor and Hart
November 2, 2026
Retailer 4$444 NZD
Retailer 1$566 NZD
Retailer 3$595 NZD
Retailer 2$620 NZD
Taylor and Hart$1,148 NZD

2 data points across 5 retailers

6 retailers$444 NZD to $1,148 NZD

B+
Cheapest Retailer
-
$444 NZD
$250 USD
Retailer 2
-
$566 NZD
£251 GBP
View
A
Retailer 3
-
$595 NZD
$335 USD
View
B+
Retailer 4
-
$620 NZD
£275 GBP
View
B+
Retailer 5
-
$933 NZD
$525 USD
View
Most Expensive
B
Taylor and Hart
PHIP7Q3 · Nov 1
$1,148 NZD
$646 USD
View
5 more retailers have this diamond
Prices start from $444 NZDSave up to $704 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
1.02ct Cushion
$444 NZD