Radiant|Lab Grown|IGI

1.23ct E VVS1 Radiant Lab Grown Diamond

GD • E/VVS1

Diamond specifications and retailer prices

From $312 NZD
$176 USD
As of October 30, 2026
Save $930 NZD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,917 NZD at Helzberg Diamonds · As of October 13, 2026
View at Helzberg Diamonds

About this 1.23ct lab-grown radiant diamond

This 1.23ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a standard cut grade and certified by IGI. Listed at 11 retailers as of October 30, 2026, with a 298% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.23
Carat
E
Colour
VVS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions8.17 × 5.10 × 3.40 mm
L/W Ratio1.60
Top View
8.17 mm5.10 mm1.23 ctE / VVS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 68.0%CrownGirdle: MediumPavilionCulet: NoneDepth 66.7%

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: Oct 30
Current: $2,917 NZD|Low: $312 NZD|High: $2,917 NZD|Avg: $1,072 NZD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 3$312 NZD
Retailer 6$364 NZD
Retailer 4$387 NZD
Retailer 7$390 NZD
Retailer 2$962 NZD
Retailer 5$1,242 NZD
Helzberg Diamonds$2,917 NZD

12 data points across 7 retailers

11 retailers$312 NZD to $1,242 NZD

A
Cheapest Retailer
-
$312 NZD
$176 USD
Retailer 2
-
$314 NZD
$177 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$314 NZD
$177 USD
View
Retailer 4
-
$364 NZD
$205 USD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$387 NZD
$218 USD
View
Retailer 6
-
$389 NZD
$219 USD
View
Price last confirmed 13 days ago
Retailer 7
-
$390 NZD
$220 USD
View
Price last confirmed 16 days ago
B+
Retailer 8
-
$962 NZD
$542 USD
View
B
Retailer 9
-
$1,242 NZD
$700 USD
View
Retailer 10
-
$1,249 NZD
$704 USD
View
Price last confirmed 12 days ago
Most Expensive
Helzberg Diamonds
ZXZOJPMPLKGJ · Oct 13
$2,917 NZD
$1,644 USD
View
Price last confirmed 19 days ago
10 more retailers have this diamond
Prices start from $312 NZDSave up to $930 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
1.23ct Radiant
$312 NZD