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Cushion|Lab Grown|IGI

11.59ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG821678406

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821678406

Diamond specifications and retailer prices

From $13,323 NZD
£5,903 GBP
As of November 2, 2026
Save $24,367 NZD (65%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $37,690 NZD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 11.59ct lab-grown cushion diamond

This 11.59ct lab-grown cushion sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821678406 or 821678406. Listed at 10 retailers as of October 31, 2026, with prices from $13,323 to $37,690, a $24,367 spread on the same certified stone. Taylor and Hart lists it at $37,690. 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

11.59
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle43.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821678406
Dimensions16.80 × 10.80 × 6.81 mm
L/W Ratio1.56
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.80 mm10.80 mm11.59 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821678406
Side View
Table 63.0%Crown 35.1°Girdle: MED-STKPavilion 43.7°Culet: LargeDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $13,323 NZD|Low: $10,531 NZD|High: $37,690 NZD|Avg: $20,411 NZD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Taylor and Hart
November 2, 2026
Retailer 1$13,323 NZD
Retailer 4$14,458 NZD
Retailer 8$14,870 NZD
Retailer 9$15,870 NZD
Retailer 6$16,220 NZD
Retailer 3$16,248 NZD
Retailer 5$19,756 NZD
Retailer 2$19,951 NZD
Retailer 7$32,780 NZD
Taylor and Hart$37,690 NZD

38 data points across 10 retailers

10 retailers$13,323 NZD to $37,690 NZD

B+
Cheapest Retailer
-
$13,323 NZD
£5,903 GBP
B
Retailer 2
-
$14,458 NZD
$8,135 USD
View
B
Retailer 3
-
$14,870 NZD
£6,588 GBP
View
B
Retailer 4
-
$15,870 NZD
$8,929 USD
View
B
Retailer 5
-
$16,220 NZD
$9,126 USD
View
B
Retailer 6
-
$16,248 NZD
ZAR 147,689 ZAR
View
B
Retailer 7
-
$19,756 NZD
$11,116 USD
View
B
Retailer 8
-
$19,951 NZD
A$17,270 AUD
View
B
Retailer 9
-
$32,780 NZD
SGD 24,924 SGD
View
Most Expensive
B
Taylor and Hart
XNGMGFI · Oct 31
$37,690 NZD
$21,207 USD
View
9 more retailers have this diamond
Prices start from $13,323 NZDSave up to $24,367 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.

B+
11.59ct Cushion
$13,323 NZD