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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 $6,897 AUD
$4,845 USD
As of October 31, 2026
Save $22,173 AUD (76%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $29,070 AUD 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 $6,897 to $29,070, a $22,173 spread on the same certified stone. Brilliant Earth lists it at $29,070. 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: $29,070 AUD|Low: $6,897 AUD|High: $29,967 AUD|Avg: $12,992 AUD|-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$6,897 AUD
Retailer 3$7,128 AUD
Retailer 4$7,531 AUD
Retailer 10$7,603 AUD
Retailer 9$7,855 AUD
Retailer 2$8,332 AUD
Retailer 5$9,026 AUD
Retailer 7$13,234 AUD
Retailer 8$13,700 AUD
Retailer 11$19,488 AUD
Retailer 12$24,959 AUD
Brilliant Earth$29,070 AUD

18 data points across 12 retailers

7 retailers$6,897 AUD to $29,070 AUD

A
Cheapest Retailer
-
$6,897 AUD
$4,845 USD
A
Retailer 2
-
$7,855 AUD
$5,518 USD
View
A
Retailer 3
-
$8,332 AUD
€5,574 EUR
View
Retailer 4
-
$9,026 AUD
$6,340 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$13,234 AUD
$9,296 USD
View
B+
Retailer 6
-
$13,700 AUD
$9,624 USD
View
Most Expensive
B
Brilliant Earth
10155003A · Oct 31
$29,070 AUD
$20,420 USD
View
6 more retailers have this diamond
Prices start from $6,897 AUDSave up to $22,173 AUD

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
$6,897 AUD