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Round|Lab Grown|IGI

1.00ct J I1 Round Lab Grown Diamond

EX • J/I1

Diamond specifications and retailer prices

From $639 NZD
$360 USD
As of November 1, 2026
Save $1,907 NZD (75%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,546 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI. Listed at 3 retailers as of October 30, 2026, with prices from $639 to $2,546, a $1,907 spread on the same certified stone. NZ Jewellers lists it at $2,546. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
J
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions6.49 × 6.52 × 3.87 mm
L/W Ratio1.00
Top View
6.49 mm6.52 mm1.00 ctJ / I1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 57.0%CrownGirdle: MediumPavilionCuletDepth 60.4%

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 1
Current: $2,546 NZD|Low: $614 NZD|High: $3,708 NZD|Avg: $1,534 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 10, 2026
Retailer 2$639 NZD
Retailer 3$742 NZD
Retailer 4$782 NZD
Retailer 5$793 NZD
NZ Jewellers$2,546 NZD
Retailer 6$3,708 NZD

3 data points across 6 retailers

3 retailers$639 NZD to $2,546 NZD

B+
Cheapest Retailer
-
$639 NZD
$360 USD
B+
Retailer 2
-
$742 NZD
$418 USD
View
Most Expensive
B
NZ Jewellers
933e2085-3eaf-46c9-91cb-b3468be82c17 · Oct 30
$2,546 NZD
$1,435 USD
View
2 more retailers have this diamond
Prices start from $639 NZDSave up to $1,907 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 Round
$639 NZD