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Round|Lab Grown|IGI

1.23ct D VS1 Round Lab Grown Diamond

ID • D/VS1 • IGI LG589304531

Shape and cutting style on the report: Round brilliant

Certificate IGI LG589304531

Diamond specifications and retailer prices

From $338 NZD
$190 USD
As of October 30, 2026
Save $1,619 NZD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $1,957 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 D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG589304531 or 589304531. Listed at 23 retailers as of October 30, 2026, with prices from $338 to $1,957, a $1,619 spread on the same certified stone. Reve Diamonds lists it at $1,957. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG589304531
Dimensions6.81 × 6.85 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.81 mm6.85 mm1.23 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG589304531
Side View
Table 59.0%Crown 35°Girdle: MediumPavilion 41.3°Culet: NoneDepth 62.1%

Caratlytics Score

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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: $389 NZD|Low: $291 NZD|High: $1,783 NZD|Avg: $773 NZD|+3.3%
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
November 2, 2026
Retailer 6$313 NZD
Retailer 2$352 NZD
Retailer 1$389 NZD
Retailer 3$512 NZD
Retailer 9$631 NZD
Retailer 8$640 NZD
Retailer 12$651 NZD
Retailer 10$671 NZD
Retailer 14$887 NZD
Retailer 11$920 NZD
Retailer 15$935 NZD
Retailer 5$954 NZD
Retailer 7$1,248 NZD
Retailer 4$1,283 NZD
Retailer 13$1,763 NZD

30 data points across 15 retailers

23 retailers$338 NZD to $1,957 NZD

Retailer 1
-
$313 NZD
$176 USD
Price last confirmed 15 days ago
A
Retailer 2
-
$338 NZD
$190 USD
View
Final sale: no returns
A
Retailer 3
-
$352 NZD
$198 USD
View
Retailer 4
-
$377 NZD
$212 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$389 NZD
$219 USD
View
B+
Retailer 6
-
$512 NZD
$288 USD
View
A
Retailer 7
-
$631 NZD
€338 EUR
View
A
Retailer 8
-
$640 NZD
£283 GBP
View
A
Retailer 9
-
$651 NZD
ZAR 5,913 ZAR
View
A
Retailer 10
-
$671 NZD
£297 GBP
View
A
Retailer 11
-
$707 NZD
$398 USD
View
A
Retailer 12
-
$741 NZD
$417 USD
View
B+
Retailer 13
-
$887 NZD
A$768 AUD
View
B+
Retailer 14
-
$920 NZD
A$796 AUD
View
B+
Retailer 15
-
$935 NZD
$526 USD
View
Retailer 16
-
$944 NZD
$531 USD
View
Price last confirmed 8 days ago
B+
Retailer 17
-
$954 NZD
$537 USD
View
B
Retailer 18
-
$1,242 NZD
$699 USD
View
Retailer 19
-
$1,248 NZD
$702 USD
View
Price last confirmed 16 days ago
B
Retailer 20
-
$1,283 NZD
A$1,111 AUD
View
B
Retailer 21
-
$1,309 NZD
$736 USD
View
B
Retailer 22
-
$1,763 NZD
£781 GBP
View
Most Expensive
B
Reve Diamonds
5A8031336 · Nov 1
$1,957 NZD
$1,101 USD
View
22 more retailers have this diamond
Prices start from $338 NZDSave up to $1,619 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
$338 NZD