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Round|Lab Grown|IGI

12.57ct G VS2 Round Lab Grown Diamond

ID • G/VS2 • IGI LG612321275

Shape and cutting style on the report: Round brilliant

Certificate IGI LG612321275

Diamond specifications and retailer prices

From $8,596 NZD
$4,845 USD
As of October 31, 2026
Save $27,635 NZD (76%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $36,231 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.57ct lab-grown round diamond

This 12.57ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG612321275 or 612321275. Listed at 7 retailers as of October 31, 2026, with prices from $8,596 to $36,231, a $27,635 spread on the same certified stone. Brilliant Earth lists it at $36,231. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

12.57
Carat
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG612321275
Dimensions14.82 × 14.73 × 9.22 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
14.82 mm14.73 mm12.57 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG612321275
Side View
Table 56.0%Crown 35.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.3%

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: Oct 31
Current: $36,231 NZD|Low: $8,596 NZD|High: $37,349 NZD|Avg: $16,193 NZD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 6$8,596 NZD
Retailer 3$8,884 NZD
Retailer 4$9,386 NZD
Retailer 10$9,477 NZD
Retailer 9$9,791 NZD
Retailer 2$10,384 NZD
Retailer 5$11,249 NZD
Retailer 7$16,494 NZD
Retailer 8$17,075 NZD
Retailer 11$24,289 NZD
Retailer 12$31,107 NZD
Brilliant Earth$36,231 NZD

18 data points across 12 retailers

7 retailers$8,596 NZD to $36,231 NZD

A
Cheapest Retailer
-
$8,596 NZD
$4,845 USD
A
Retailer 2
-
$9,791 NZD
$5,518 USD
View
A
Retailer 3
-
$10,384 NZD
€5,574 EUR
View
Retailer 4
-
$11,249 NZD
$6,340 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$16,494 NZD
$9,296 USD
View
B+
Retailer 6
-
$17,075 NZD
$9,624 USD
View
Most Expensive
B
Brilliant Earth
10155003A · Oct 31
$36,231 NZD
$20,420 USD
View
6 more retailers have this diamond
Prices start from $8,596 NZDSave up to $27,635 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
12.57ct Round
$8,596 NZD