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Oval|Lab Grown|IGI

6.57ct E VS2 Oval Lab Grown Diamond

EX • E/VS2 • IGI LG731571959

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG731571959

Diamond specifications and retailer prices

From $2,519 NZD
$1,415 USD
As of October 29, 2026
Save $20,075 NZD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $22,595 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 6.57ct lab-grown oval diamond

This 6.57ct lab-grown oval sits in the over five carat band, graded E colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG731571959 or 731571959. Listed at 22 retailers as of October 29, 2026, with prices from $2,519 to $22,595, a $20,075 spread on the same certified stone. Brilliant Earth lists it at $22,595. 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

6.57
Carat
E
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731571959
Dimensions10.27 × 10.27 × 6.13 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.27 mm10.27 mm6.57 ctE / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731571959
Side View
Table 58.0%Crown 37.6°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 59.7%

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 29
Current: $22,595 NZD|Low: $1,798 NZD|High: $22,826 NZD|Avg: $6,784 NZD
Brilliant Earth
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
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 19$2,160 NZD
Retailer 4$2,519 NZD
Retailer 9$2,610 NZD
Retailer 14$2,920 NZD
Retailer 3$3,410 NZD
Retailer 17$3,673 NZD
Retailer 2$4,065 NZD
Retailer 6$4,592 NZD
Retailer 5$4,866 NZD
Retailer 13$5,009 NZD
Retailer 10$6,947 NZD
Retailer 18$7,491 NZD
Retailer 8$7,707 NZD
Retailer 12$8,274 NZD
Retailer 16$8,771 NZD
Retailer 15$9,873 NZD
Retailer 11$10,214 NZD
Retailer 7$16,398 NZD
Brilliant Earth$22,595 NZD

43 data points across 19 retailers

22 retailers$2,519 NZD to $22,595 NZD

Retailer 1
-
$2,160 NZD
$1,213 USD
Price last confirmed 28 days ago
Retailer 2
-
$2,448 NZD
$1,375 USD
View
Price last confirmed 34 days ago
A
Retailer 3
-
$2,519 NZD
$1,415 USD
View
Final sale: no returns
Retailer 4
-
$2,610 NZD
$1,466 USD
View
Price last confirmed 27 days ago
A
Retailer 5
-
$2,920 NZD
$1,640 USD
View
A
Retailer 6
-
$3,410 NZD
$1,915 USD
View
A
Retailer 7
-
$3,673 NZD
$2,063 USD
View
A
Retailer 8
-
$4,065 NZD
£1,798 GBP
View
B+
Retailer 9
-
$4,592 NZD
$2,579 USD
View
B+
Retailer 10
-
$4,866 NZD
$2,733 USD
View
B+
Retailer 11
-
$5,009 NZD
A$4,328 AUD
View
Retailer 12
-
$5,400 NZD
$3,033 USD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
$6,947 NZD
£3,072 GBP
View
B
Retailer 14
-
$7,491 NZD
$4,207 USD
View
B
Retailer 15
-
$7,707 NZD
$4,329 USD
View
B
Retailer 16
-
$8,274 NZD
£3,659 GBP
View
Retailer 17
-
$8,771 NZD
A$7,579 AUD
View
Price last confirmed 21 days ago
B
Retailer 18
-
$9,873 NZD
$5,545 USD
View
B
Retailer 19
-
$10,214 NZD
$5,737 USD
View
B
Retailer 20
-
$15,490 NZD
$8,700 USD
View
B
Retailer 21
-
$16,398 NZD
$9,210 USD
View
Most Expensive
B
Brilliant Earth
20288454A · Oct 29
$22,595 NZD
$12,690 USD
View
21 more retailers have this diamond
Prices start from $2,519 NZDSave up to $20,075 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
6.57ct Oval
$2,519 NZD