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Round|Lab Grown|IGI

0.73ct D SI2 Round Lab Grown Diamond

EX • D/SI2

Diamond specifications and retailer prices

From $428 NZD
$241 USD
As of October 27, 2026
Save $1,336 NZD (76%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,764 NZD at Helzberg Diamonds · As of October 29, 2026
View at Helzberg Diamonds

About this 0.73ct lab-grown round diamond

This 0.73ct lab-grown round sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 3 retailers as of October 27, 2026, with prices from $428 to $1,764, a $1,336 spread on the same certified stone. Helzberg Diamonds lists it at $1,764. 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

0.73
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions5.81 × 5.85 × 3.53 mm
L/W Ratio1.01
Top View
5.81 mm5.85 mm0.73 ctD / SI2
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 60.0%CrownGirdlePavilionCuletDepth 60.8%

Caratlytics Score

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

Price History

Last verified: Oct 27
Current: $1,764 NZD|Low: $328 NZD|High: $1,764 NZD|Avg: $953 NZD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
October 21, 2026
Retailer 4$328 NZD
Retailer 2$428 NZD
Retailer 3$1,377 NZD
Helzberg Diamonds$1,764 NZD

4 data points across 4 retailers

3 retailers$428 NZD to $1,764 NZD

B+
Cheapest Retailer
-
$428 NZD
$241 USD
C
Retailer 2
-
$1,377 NZD
$776 USD
View
Most Expensive
C
Helzberg Diamonds
ZXZNGMLKONPN · Oct 29
$1,764 NZD
$994 USD
View
2 more retailers have this diamond
Prices start from $428 NZDSave up to $1,336 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+
0.73ct Round
$428 NZD