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Round|Lab Grown|IGI

6.31ct H VS2 Round Lab Grown Diamond

ID • H/VS2 • IGI LG581318516

Shape and cutting style on the report: Round brilliant

Certificate IGI LG581318516

Diamond specifications and retailer prices

From $1,682 NZD
$948 USD
As of October 29, 2026
Save $6,040 NZD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,722 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 6.31ct lab-grown round diamond

This 6.31ct lab-grown round sits in the over five carat band, graded H colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG581318516 or 581318516. Listed at 16 retailers as of October 29, 2026, with prices from $1,682 to $7,722, a $6,040 spread on the same certified stone. Blue Nile lists it at $7,722. 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

6.31
Carat
H
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG581318516
Dimensions11.83 × 11.74 × 7.34 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
11.83 mm11.74 mm6.31 ctH / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG581318516
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 41°Culet: NoneDepth 62.2%

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: Oct 29
Current: $7,722 NZD|Low: $1,121 NZD|High: $7,931 NZD|Avg: $3,763 NZD|+0.0%
Blue Nile
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
October 31, 2026
Retailer 9$1,570 NZD
Retailer 3$1,682 NZD
Retailer 13$1,829 NZD
Retailer 15$1,952 NZD
Retailer 17$1,952 NZD
Retailer 11$2,262 NZD
Retailer 4$2,795 NZD
Retailer 2$2,796 NZD
Retailer 16$2,917 NZD
Retailer 6$3,121 NZD
Retailer 5$4,028 NZD
Retailer 14$4,205 NZD
Retailer 18$5,486 NZD
Retailer 12$6,627 NZD
Retailer 7$6,790 NZD
Retailer 10$7,237 NZD
Retailer 8$7,700 NZD
Blue Nile$7,722 NZD

33 data points across 18 retailers

16 retailers$1,682 NZD to $7,722 NZD

A
Cheapest Retailer
-
$1,682 NZD
$948 USD
A
Retailer 2
-
$1,829 NZD
$1,031 USD
View
Retailer 3
-
$1,952 NZD
$1,100 USD
View
Price last confirmed 14 days ago
A
Retailer 4
-
$1,952 NZD
$1,100 USD
View
A
Retailer 5
-
$2,262 NZD
$1,275 USD
View
B+
Retailer 6
-
$2,795 NZD
$1,575 USD
View
B+
Retailer 7
-
$2,796 NZD
€1,501 EUR
View
Retailer 8
-
$2,917 NZD
£1,295 GBP
View
Price last confirmed 14 days ago
B+
Retailer 9
-
$3,121 NZD
$1,759 USD
View
B+
Retailer 10
-
$4,028 NZD
$2,270 USD
View
B+
Retailer 11
-
$4,205 NZD
$2,370 USD
View
B
Retailer 12
-
$5,486 NZD
$3,092 USD
View
B
Retailer 13
-
$6,627 NZD
£2,941 GBP
View
Retailer 14
-
$6,790 NZD
$3,827 USD
View
Price last confirmed 12 days ago
B
Retailer 15
-
$7,700 NZD
$4,340 USD
View
Most Expensive
B
Blue Nile
25245800 · Oct 31
$7,722 NZD
$4,352 USD
View
15 more retailers have this diamond
Prices start from $1,682 NZDSave up to $6,040 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
6.31ct Round
$1,682 NZD