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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 $3,690 USD
As of October 29, 2026
Save $11,423 USD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $15,113 USD at Taylor and Hart · As of October 30, 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 29, 2026, with prices from $3,690 to $15,113, a $11,423 spread on the same certified stone. Taylor and Hart lists it at $15,113. 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
Color
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: Oct 29
Current: $6,625 USD|Low: $3,690 USD|High: $15,113 USD|Avg: $7,184 USD|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
October 29, 2026
Retailer 7$3,690 USD
Retailer 8$4,281 USD
Retailer 4$4,285 USD
Retailer 6$5,789 USD
Retailer 10$6,568 USD
Retailer 1$6,625 USD
Retailer 9$6,635 USD
Retailer 3$6,934 USD
Retailer 2$7,684 USD
Retailer 5$8,033 USD
Taylor and Hart$15,113 USD

25 data points across 11 retailers

14 retailers$3,690 USD to $15,113 USD

A
Cheapest Retailer
-
$3,690 USD
A
Retailer 2
-
$4,015 USD
View
B+
Retailer 3
-
$4,281 USD
View
Retailer 4
-
$4,281 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
$4,285 USD
View
B+
Retailer 6
-
$5,349 USD
View
B+
Retailer 7
-
$5,789 USD
View
B+
Retailer 8
-
$6,568 USD
£5,172 GBP
View
B+
Retailer 9
-
$6,625 USD
ZAR 107,034 ZAR
View
B+
Retailer 10
-
$6,635 USD
View
B+
Retailer 11
-
$6,934 USD
€6,604 EUR
View
B
Retailer 12
-
$7,684 USD
View
Retailer 13
-
$8,033 USD
A$12,359 AUD
View
Price last confirmed 8 days ago
Most Expensive
B
Taylor and Hart
8JZ5323 · Oct 30
$15,113 USD
View
13 more retailers have this diamond
Prices start from $3,690 USDSave up to $11,423 USD

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
$3,690 USD