CaratHunter
Plans
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 €3,303 EUR
$3,690 USD
As of October 29, 2026
Save €10,225 EUR (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €13,528 EUR 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 29, 2026, with prices from €3,303 to €13,528, a €10,225 spread on the same certified stone. Taylor and Hart lists it at €13,528. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €7,178 EUR|Low: €3,303 EUR|High: €13,528 EUR|Avg: €6,396 EUR|-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€3,303 EUR
Retailer 8€3,832 EUR
Retailer 5€3,835 EUR
Retailer 6€5,182 EUR
Retailer 10€5,879 EUR
Retailer 4€5,930 EUR
Retailer 9€5,939 EUR
Retailer 3€6,164 EUR
Retailer 2€6,878 EUR
Retailer 1€7,178 EUR
Taylor and Hart€13,528 EUR

26 data points across 11 retailers

14 retailers€3,303 EUR to €13,528 EUR

A
Cheapest Retailer
-
€3,303 EUR
$3,690 USD
A
Retailer 2
-
€3,594 EUR
$4,015 USD
View
B+
Retailer 3
-
€3,832 EUR
$4,281 USD
View
Retailer 4
-
€3,832 EUR
$4,281 USD
View
Price last confirmed 19 days ago
A
Retailer 5
-
€3,835 EUR
$4,285 USD
View
B+
Retailer 6
-
€4,788 EUR
$5,349 USD
View
B+
Retailer 7
-
€5,182 EUR
$5,789 USD
View
B+
Retailer 8
-
€5,879 EUR
£5,172 GBP
View
B+
Retailer 9
-
€5,930 EUR
ZAR 107,034 ZAR
View
B+
Retailer 10
-
€5,939 EUR
$6,635 USD
View
B+
Retailer 11
-
€6,164 EUR
View
B
Retailer 12
-
€6,878 EUR
$7,684 USD
View
B
Retailer 13
-
€7,178 EUR
A$12,338 AUD
View
Most Expensive
B
Taylor and Hart
8JZ5323 · Oct 31
€13,528 EUR
$15,113 USD
View
13 more retailers have this diamond
Prices start from €3,303 EURSave up to €10,225 EUR

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
€3,303 EUR