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Radiant|Lab Grown|IGI

6.63ct D VVS2 Radiant Lab Grown Diamond

ID • D/VVS2 • IGI LG840639638

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG840639638

Diamond specifications and retailer prices

From $5,087 NZD
$2,867 USD
As of October 31, 2026
Save $15,584 NZD (75%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $20,671 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 6.63ct lab-grown radiant diamond

This 6.63ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG840639638 or 840639638. Listed at 16 retailers as of October 31, 2026, with prices from $5,087 to $20,671, a $15,584 spread on the same certified stone. Brilliant Earth lists it at $20,671. 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

6.63
Carat
D
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840639638
Dimensions13.20 × 9.07 × 6.10 mm
L/W Ratio1.46
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.20 mm9.07 mm6.63 ctD / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840639638
Side View
Table 65.0%Crown 44.4°Girdle: Slightly ThickPavilion 34.2°Culet: NoneDepth 67.3%

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: $20,671 NZD|Low: $5,087 NZD|High: $31,955 NZD|Avg: $11,321 NZD|-35.3%
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
November 1, 2026
Retailer 7$5,087 NZD
Retailer 9$5,454 NZD
Retailer 4$5,554 NZD
Retailer 10$7,055 NZD
Retailer 16$7,527 NZD
Retailer 3$7,731 NZD
Retailer 13$7,966 NZD
Retailer 5$9,246 NZD
Retailer 2$9,760 NZD
Retailer 6$10,005 NZD
Retailer 14$10,195 NZD
Retailer 12$11,633 NZD
Retailer 11$14,067 NZD
Retailer 15$14,180 NZD
Retailer 8$18,377 NZD
Brilliant Earth$20,671 NZD

28 data points across 16 retailers

16 retailers$5,087 NZD to $20,671 NZD

A
Cheapest Retailer
-
$5,087 NZD
$2,867 USD
Final sale: no returns
A
Retailer 2
-
$5,454 NZD
£2,420 GBP
View
A
Retailer 3
-
$5,554 NZD
$3,130 USD
View
B+
Retailer 4
-
$7,055 NZD
£3,131 GBP
View
B+
Retailer 5
-
$7,527 NZD
$4,242 USD
View
B+
Retailer 6
-
$7,731 NZD
$4,357 USD
View
B+
Retailer 7
-
$7,966 NZD
€4,276 EUR
View
B+
Retailer 8
-
$9,246 NZD
$5,211 USD
View
B+
Retailer 9
-
$9,760 NZD
A$8,463 AUD
View
B+
Retailer 10
-
$10,005 NZD
£4,440 GBP
View
B+
Retailer 11
-
$10,195 NZD
ZAR 92,822 ZAR
View
B+
Retailer 12
-
$11,633 NZD
A$10,087 AUD
View
B
Retailer 13
-
$14,067 NZD
$7,928 USD
View
B
Retailer 14
-
$14,180 NZD
£6,293 GBP
View
B
Retailer 15
-
$18,377 NZD
$10,358 USD
View
Most Expensive
B
Brilliant Earth
21675069A · Oct 31
$20,671 NZD
$11,650 USD
View
15 more retailers have this diamond
Prices start from $5,087 NZDSave up to $15,584 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
6.63ct Radiant
$5,087 NZD