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Oval|Lab Grown|IGI

15.71ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG635468337

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG635468337

Diamond specifications and retailer prices

From $8,020 NZD
£3,553 GBP
As of November 2, 2026
Save $35,523 NZD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $43,544 NZD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 15.71ct lab-grown oval diamond

This 15.71ct lab-grown oval sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG635468337 or 635468337. Listed at 11 retailers as of October 29, 2026, with prices from $8,020 to $43,544, a $35,523 spread on the same certified stone. Do Amore Diamonds lists it at $43,544. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

15.71
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG635468337
Dimensions20.93 × 13.91 × 8.69 mm
L/W Ratio1.50
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
20.93 mm13.91 mm15.71 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG635468337
Side View
Table 59.0%Crown 35.3°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: Nov 2
Current: $43,544 NZD|Low: $6,529 NZD|High: $127,234 NZD|Avg: $29,202 NZD
Do Amore Diamonds
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 2, 2026
Retailer 2$8,020 NZD
Retailer 11$9,048 NZD
Retailer 14$11,748 NZD
Retailer 12$12,478 NZD
Retailer 5$12,507 NZD
Retailer 10$12,723 NZD
Retailer 7$12,990 NZD
Retailer 9$13,010 NZD
Retailer 4$16,782 NZD
Retailer 3$20,144 NZD
Retailer 15$23,574 NZD
Retailer 13$35,799 NZD
Retailer 16$39,760 NZD
Do Amore Diamonds$43,544 NZD
Retailer 6$43,722 NZD
Retailer 8$127,234 NZD

11 data points across 16 retailers

11 retailers$8,020 NZD to $43,544 NZD

A
Cheapest Retailer
-
$8,020 NZD
£3,553 GBP
B+
Retailer 2
-
$9,048 NZD
$5,091 USD
View
B+
Retailer 3
-
$11,748 NZD
$6,610 USD
View
B
Retailer 4
-
$12,478 NZD
$7,021 USD
View
B
Retailer 5
-
$12,723 NZD
£5,637 GBP
View
B
Retailer 6
-
$20,144 NZD
$11,334 USD
View
B
Retailer 7
-
$23,574 NZD
$13,264 USD
View
B
Retailer 8
-
$35,799 NZD
$20,142 USD
View
B
Retailer 9
-
$39,760 NZD
$22,371 USD
View
B
Retailer 10
-
$41,127 NZD
$23,140 USD
View
Most Expensive
B
Do Amore Diamonds
27-F9C3B9F41 · Oct 29
$43,544 NZD
$24,500 USD
View
10 more retailers have this diamond
Prices start from $8,020 NZDSave up to $35,523 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
15.71ct Oval
$8,020 NZD