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Radiant|Lab Grown|IGI

1.01ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG474116512

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

Certificate IGI LG474116512

Diamond specifications and retailer prices

From $1,293 NZD
$729 USD
As of October 30, 2026
Save $1,139 NZD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,219 NZD at NZ Jewellers · As of November 1, 2026
View at NZ Jewellers

About this 1.01ct lab-grown radiant diamond

This 1.01ct 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 LG474116512 or 474116512. Listed at 12 retailers as of October 30, 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

1.01
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle51.5°
Pavilion angle30.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474116512
Dimensions6.50 × 4.96 × 3.37 mm
L/W Ratio1.31
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
6.50 mm4.96 mm1.01 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474116512
Side View
Table 63.5%Crown 51.5°Girdle: MediumPavilion 30.9°Culet: NoneDepth 67.9%

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: Oct 30
Current: $4,219 NZD|Low: $1,242 NZD|High: $5,965 NZD|Avg: $2,479 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7$1,293 NZD
Retailer 11$1,407 NZD
Retailer 3$1,448 NZD
Retailer 9$1,501 NZD
Retailer 8$1,810 NZD
Retailer 5$1,819 NZD
Retailer 2$2,408 NZD
Retailer 10$2,433 NZD
Retailer 6$3,698 NZD
NZ Jewellers$4,219 NZD
Retailer 4$5,926 NZD

43 data points across 11 retailers

12 retailers$1,293 NZD to $2,433 NZD

B+
Cheapest Retailer
-
$1,293 NZD
$729 USD
B
Retailer 2
-
$1,407 NZD
$793 USD
View
B
Retailer 3
-
$1,448 NZD
$816 USD
View
Final sale: no returns
Retailer 4
-
$1,501 NZD
$846 USD
View
Price last confirmed 20 days ago
B
Retailer 5
-
$1,501 NZD
$846 USD
View
B
Retailer 6
-
$1,810 NZD
$1,020 USD
View
B
Retailer 7
-
$1,819 NZD
$1,025 USD
View
B
Retailer 8
-
$2,408 NZD
£1,069 GBP
View
B
Retailer 9
-
$2,433 NZD
$1,371 USD
View
Retailer 10
-
$3,698 NZD
$2,084 USD
View
Price under review
Most Expensive
NZ Jewellers
ae1965fb-e8be-4d04-b242-c0bef01d2dc5 · Nov 1
$4,219 NZD
$2,378 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,293 NZDSave up to $1,139 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+
1.01ct Radiant
$1,293 NZD