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Radiant|Lab Grown|IGI

1.00ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG472170773

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

Certificate IGI LG472170773

Diamond specifications and retailer prices

From $1,302 NZD
As of November 6, 2026
Save $1,149 NZD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,250 NZD at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

About this 1ct lab-grown radiant diamond

This 1ct 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 LG472170773 or 472170773. Listed at 12 retailers as of November 6, 2026, with a 88% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle31°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472170773
Dimensions6.62 × 5.12 × 3.29 mm
L/W Ratio1.29
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.62 mm5.12 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG472170773
Side View
Table 68.5%Crown 41.7°Girdle: MED-STKPavilion 31°Culet: NoneDepth 64.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,250 NZD|Low: $1,250 NZD|High: $6,012 NZD|Avg: $2,496 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$1,302 NZD
Retailer 11$1,418 NZD
Retailer 3$1,458 NZD
Retailer 9$1,512 NZD
Retailer 8$1,822 NZD
Retailer 5$1,831 NZD
Retailer 2$2,399 NZD
Retailer 10$2,452 NZD
Retailer 6$3,723 NZD
NZ Jewellers$4,250 NZD
Retailer 4$5,935 NZD

44 data points across 11 retailers

12 retailers$1,302 NZD to $2,452 NZD

B+
Cheapest Retailer
-
$1,302 NZD
B
Retailer 2
-
$1,418 NZD
View
B
Retailer 3
-
$1,458 NZD
View
Final sale: no returns
Retailer 4
-
$1,512 NZD
View
Price last confirmed 26 days ago
B
Retailer 5
-
$1,512 NZD
View
B
Retailer 6
-
$1,822 NZD
View
B
Retailer 7
-
$1,831 NZD
View
B
Retailer 8
-
$2,399 NZD
View
B
Retailer 9
-
$2,452 NZD
View
Retailer 10
-
$3,723 NZD
View
Price under review
Most Expensive
NZ Jewellers
7693c38d-db1f-4306-a8c8-0bd39cf2f50c · Nov 6
$4,250 NZD
$2,356 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,302 NZDSave up to $1,149 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.

B+
1.00ct Radiant
$1,302 NZD