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Oval|Lab Grown|IGI

12.27ct H VS1 Oval Lab Grown Diamond

ID • H/VS1 • IGI LG818686315

Shape and cutting style on the report: Antique oval cut

Certificate IGI LG818686315

Diamond specifications and retailer prices

From $6,547 NZD
$3,690 USD
As of November 1, 2026
Save $20,268 NZD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $26,815 NZD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 12.27ct lab-grown oval diamond

This 12.27ct lab-grown oval sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818686315 or 818686315. Listed at 14 retailers as of October 31, 2026, with prices from $6,547 to $26,815, a $20,268 spread on the same certified stone. Taylor and Hart lists it at $26,815. 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

12.27
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686315
Dimensions21.52 × 11.36 × 7.13 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
21.52 mm11.36 mm12.27 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686315
Side View
Table 59.0%Crown 40.2°Girdle: STK-THKPavilion 40.5°Culet: LargeDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $14,229 NZD|Low: $6,547 NZD|High: $26,815 NZD|Avg: $12,652 NZD|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
November 1, 2026
Retailer 7$6,547 NZD
Retailer 8$7,596 NZD
Retailer 5$7,603 NZD
Retailer 6$10,271 NZD
Retailer 10$11,654 NZD
Retailer 4$11,755 NZD
Retailer 9$11,772 NZD
Retailer 3$12,218 NZD
Retailer 2$13,634 NZD
Retailer 1$14,229 NZD
Taylor and Hart$26,815 NZD

25 data points across 11 retailers

14 retailers$6,547 NZD to $26,815 NZD

A
Cheapest Retailer
-
$6,547 NZD
$3,690 USD
A
Retailer 2
-
$7,124 NZD
$4,015 USD
View
B+
Retailer 3
-
$7,596 NZD
$4,281 USD
View
Retailer 4
-
$7,596 NZD
$4,281 USD
View
Price last confirmed 20 days ago
A
Retailer 5
-
$7,603 NZD
$4,285 USD
View
B+
Retailer 6
-
$9,491 NZD
$5,349 USD
View
B+
Retailer 7
-
$10,271 NZD
$5,789 USD
View
B+
Retailer 8
-
$11,654 NZD
£5,172 GBP
View
B+
Retailer 9
-
$11,755 NZD
ZAR 107,034 ZAR
View
B+
Retailer 10
-
$11,772 NZD
$6,635 USD
View
B+
Retailer 11
-
$12,218 NZD
€6,558 EUR
View
B
Retailer 12
-
$13,634 NZD
$7,684 USD
View
B
Retailer 13
-
$14,229 NZD
A$12,338 AUD
View
Most Expensive
B
Taylor and Hart
8JZ5323 · Oct 31
$26,815 NZD
$15,113 USD
View
13 more retailers have this diamond
Prices start from $6,547 NZDSave up to $20,268 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
12.27ct Oval
$6,547 NZD