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Princess|Lab Grown|IGI

15.51ct G VS1 Princess Lab Grown Diamond

EX • G/VS1 • IGI LG838639168

Shape and cutting style on the report: Princess cut

Certificate IGI LG838639168

Diamond specifications and retailer prices

From $5,988 NZD
$3,375 USD
As of November 1, 2026
Save $17,699 NZD (75%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $23,687 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 15.51ct lab-grown princess diamond

This 15.51ct lab-grown princess 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 LG838639168 or 838639168. Listed at 3 retailers as of October 31, 2026, with prices from $5,988 to $23,687, a $17,699 spread on the same certified stone. Brilliant Earth lists it at $23,687. 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

15.51
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.6°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838639168
Dimensions13.94 × 13.66 × 9.39 mm
L/W Ratio1.02
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.94 mm13.66 mm15.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838639168
Side View
Table 70.0%Crown 44.6°Girdle: MediumPavilion 38.2°Culet: NoneDepth 68.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $23,687 NZD|Low: $5,988 NZD|High: $24,414 NZD|Avg: $14,482 NZD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$5,988 NZD
Retailer 2$8,438 NZD
Brilliant Earth$23,687 NZD

32 data points across 3 retailers

3 retailers$5,988 NZD to $23,687 NZD

A
Cheapest Retailer
-
$5,988 NZD
$3,375 USD
Final sale: no returns
A
Retailer 2
-
$8,438 NZD
£3,745 GBP
View
Most Expensive
B
Brilliant Earth
21542489A · Oct 31
$23,687 NZD
$13,350 USD
View
2 more retailers have this diamond
Prices start from $5,988 NZDSave up to $17,699 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
15.51ct Princess
$5,988 NZD