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Radiant|Lab Grown|IGI

1.21ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG831692380

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

Certificate IGI LG831692380

Diamond specifications and retailer prices

From $375 NZD
As of November 2, 2026
Save $1,808 NZD (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,183 NZD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG831692380 or 831692380. Listed at 20 retailers as of November 1, 2026, with prices from $375 to $2,183, a $1,808 spread on the same certified stone. Reve Diamonds lists it at $2,183. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831692380
Dimensions8.07 × 5.21 × 3.46 mm
L/W Ratio1.55
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.07 mm5.21 mm1.21 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831692380
Side View
Table 64.0%Crown 35.5°Girdle: MED-STKPavilion 35.3°Culet: NoneDepth 66.4%

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 2
Current: $1,247 NZD|Low: $375 NZD|High: $2,183 NZD|Avg: $1,112 NZD|-16.7%
Retailer 1
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
Retailer 19
Reve Diamonds
November 3, 2026
Retailer 5$375 NZD
Retailer 4$418 NZD
Retailer 19$434 NZD
Retailer 7$464 NZD
Retailer 14$619 NZD
Retailer 18$781 NZD
Retailer 6$797 NZD
Retailer 15$801 NZD
Retailer 9$834 NZD
Retailer 12$857 NZD
Retailer 2$897 NZD
Retailer 13$1,135 NZD
Retailer 1$1,247 NZD
Retailer 10$1,284 NZD
Retailer 17$1,492 NZD
Retailer 8$1,509 NZD
Retailer 11$1,587 NZD
Retailer 16$1,861 NZD
Retailer 3$1,957 NZD
Reve Diamonds$2,183 NZD

8 data points across 20 retailers

20 retailers$375 NZD to $2,183 NZD

A
Cheapest Retailer
-
$375 NZD
A
Retailer 2
-
$418 NZD
View
Final sale: no returns
A
Retailer 3
-
$434 NZD
View
A
Retailer 4
-
$464 NZD
View
A
Retailer 5
-
$619 NZD
View
A
Retailer 6
-
$781 NZD
View
A
Retailer 7
-
$797 NZD
View
A
Retailer 8
-
$801 NZD
View
B+
Retailer 9
-
$834 NZD
View
A
Retailer 10
-
$857 NZD
View
B+
Retailer 11
-
$897 NZD
View
B+
Retailer 12
-
$1,135 NZD
View
B+
Retailer 13
-
$1,247 NZD
View
Retailer 14
-
$1,284 NZD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$1,492 NZD
View
B
Retailer 16
-
$1,509 NZD
View
B
Retailer 17
-
$1,587 NZD
View
B
Retailer 18
-
$1,861 NZD
View
B
Retailer 19
-
$1,957 NZD
View
Most Expensive
B
Reve Diamonds
6D92BDA8B · Nov 1
$2,183 NZD
$1,227 USD
View
19 more retailers have this diamond
Prices start from $375 NZDSave up to $1,808 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
$375 NZD