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Round|Lab Grown|IGI

1.23ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG818675571

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818675571

Diamond specifications and retailer prices

From $334 NZD
As of November 3, 2026
Save $1,718 NZD (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,053 NZD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818675571 or 818675571. Listed at 17 retailers as of November 1, 2026, with prices from $334 to $2,053, a $1,718 spread on the same certified stone. Reve Diamonds lists it at $2,053. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818675571
Dimensions6.89 × 6.94 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.89 mm6.94 mm1.23 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818675571
Side View
Table 60.0%Crown 33.2°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $756 NZD|Low: $334 NZD|High: $2,147 NZD|Avg: $965 NZD|-8.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Reve Diamonds
November 3, 2026
Retailer 7$334 NZD
Retailer 5$373 NZD
Retailer 2$388 NZD
Retailer 4$414 NZD
Retailer 14$414 NZD
Retailer 10$713 NZD
Retailer 6$725 NZD
Retailer 15$743 NZD
Retailer 1$756 NZD
Retailer 3$853 NZD
Retailer 12$933 NZD
Retailer 9$1,008 NZD
Retailer 16$1,330 NZD
Retailer 13$1,335 NZD
Retailer 8$1,426 NZD
Retailer 11$1,934 NZD
Reve Diamonds$2,053 NZD

22 data points across 17 retailers

17 retailers$334 NZD to $2,053 NZD

A
Cheapest Retailer
-
$334 NZD
A
Retailer 2
-
$373 NZD
View
Final sale: no returns
A
Retailer 3
-
$388 NZD
View
Retailer 4
-
$414 NZD
View
Price last confirmed 10 days ago
A
Retailer 5
-
$414 NZD
View
A
Retailer 6
-
$713 NZD
View
A
Retailer 7
-
$725 NZD
View
A
Retailer 8
-
$743 NZD
View
A
Retailer 9
-
$756 NZD
View
B+
Retailer 10
-
$853 NZD
View
B+
Retailer 11
-
$933 NZD
View
B+
Retailer 12
-
$1,008 NZD
View
B+
Retailer 13
-
$1,330 NZD
View
B
Retailer 14
-
$1,335 NZD
View
B
Retailer 15
-
$1,426 NZD
View
B
Retailer 16
-
$1,934 NZD
View
Most Expensive
B
Reve Diamonds
D603540B5 · Nov 1
$2,053 NZD
$1,154 USD
View
16 more retailers have this diamond
Prices start from $334 NZDSave up to $1,718 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 Round
$334 NZD