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Radiant|Lab Grown|IGI

1.21ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG786693953

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG786693953

Diamond specifications and retailer prices

From $245 NZD
$138 USD
As of November 2, 2026
Save $1,172 NZD (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,418 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant 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 LG786693953 or 786693953. Listed at 18 retailers as of November 1, 2026, with prices from $245 to $1,418, a $1,172 spread on the same certified stone. MOH London lists it at $1,418. 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

1.21
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786693953
Dimensions7.40 × 5.30 × 3.57 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.40 mm5.30 mm1.21 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786693953
Side View
Table 63.0%Crown 41.5°Girdle: MediumPavilion 34.9°Culet: NoneDepth 67.4%

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 2
Current: $1,418 NZD|Low: $235 NZD|High: $2,133 NZD|Avg: $730 NZD|-0.2%
MOH London
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
November 2, 2026
Retailer 11$245 NZD
Retailer 3$284 NZD
Retailer 4$304 NZD
Retailer 13$304 NZD
Retailer 6$412 NZD
Retailer 2$517 NZD
Retailer 7$530 NZD
Retailer 10$591 NZD
Retailer 8$716 NZD
Retailer 5$754 NZD
Retailer 14$976 NZD
Retailer 12$1,235 NZD
Retailer 9$1,386 NZD
MOH London$1,418 NZD

45 data points across 14 retailers

18 retailers$245 NZD to $1,418 NZD

A
Cheapest Retailer
-
$245 NZD
$138 USD
A
Retailer 2
-
$284 NZD
$160 USD
View
Retailer 3
-
$304 NZD
$171 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$304 NZD
$171 USD
View
A
Retailer 5
-
$364 NZD
HK$1,600 HKD
View
B+
Retailer 6
-
$412 NZD
$232 USD
View
A
Retailer 7
-
$517 NZD
£229 GBP
View
A
Retailer 8
-
$530 NZD
€284 EUR
View
A
Retailer 9
-
$591 NZD
£262 GBP
View
A
Retailer 10
-
$716 NZD
$403 USD
View
A
Retailer 11
-
$754 NZD
$424 USD
View
A
Retailer 12
-
$761 NZD
$428 USD
View
B+
Retailer 13
-
$976 NZD
$549 USD
View
B+
Retailer 14
-
$1,023 NZD
SGD 778 SGD
View
B+
Retailer 15
-
$1,074 NZD
$604 USD
View
Retailer 16
-
$1,235 NZD
$695 USD
View
Price last confirmed 28 days ago
B
Retailer 17
-
$1,386 NZD
$780 USD
View
Most Expensive
B
MOH London
LG786693953 · Nov 1
$1,418 NZD
£628 GBP
View
17 more retailers have this diamond
Prices start from $245 NZDSave up to $1,172 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 Radiant
$245 NZD