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Heart|Lab Grown|IGI

12.31ct I VS1 Heart Lab Grown Diamond

ID • I/VS1 • IGI LG602368697

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG602368697

Diamond specifications and retailer prices

From €4,586 EUR
$5,123 USD
As of October 31, 2026
Save €12,392 EUR (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €16,977 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 12.31ct lab-grown heart diamond

This 12.31ct lab-grown heart sits in the over five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG602368697 or 602368697. Listed at 15 retailers as of October 31, 2026, with prices from €4,586 to €16,977, a €12,392 spread on the same certified stone. Taylor and Hart lists it at €16,977. 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

12.31
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602368697
Dimensions16.10 × 14.50 × 8.94 mm
L/W Ratio1.11
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
16.10 mm14.50 mm12.31 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602368697
Side View
Table 63.0%Crown 32.6°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 55.5%

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: Oct 31
Current: €7,731 EUR|Low: €3,930 EUR|High: €16,977 EUR|Avg: €6,751 EUR|+2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Taylor and Hart
October 31, 2026
Retailer 10€4,094 EUR
Retailer 2€4,291 EUR
Retailer 4€4,586 EUR
Retailer 9€4,699 EUR
Retailer 11€4,749 EUR
Retailer 3€4,825 EUR
Retailer 8€5,636 EUR
Retailer 13€5,935 EUR
Retailer 5€6,016 EUR
Retailer 12€7,345 EUR
Retailer 6€7,352 EUR
Retailer 1€7,731 EUR
Retailer 7€8,153 EUR
Taylor and Hart€16,977 EUR

29 data points across 14 retailers

15 retailers€4,586 EUR to €16,977 EUR

Retailer 1
-
€4,094 EUR
$4,574 USD
Price last confirmed 11 days ago
Retailer 2
-
€4,291 EUR
$4,794 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
€4,586 EUR
$5,123 USD
View
Final sale: no returns
B+
Retailer 4
-
€4,699 EUR
$5,250 USD
View
Retailer 5
-
€4,749 EUR
$5,306 USD
View
Price last confirmed 11 days ago
Retailer 6
-
€4,749 EUR
$5,306 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
€4,825 EUR
$5,390 USD
View
B+
Retailer 8
-
€5,636 EUR
$6,297 USD
View
Retailer 9
-
€5,935 EUR
$6,631 USD
View
Price last confirmed 11 days ago
Retailer 10
-
€6,422 EUR
$7,175 USD
View
Price last confirmed 19 days ago
B
Retailer 11
-
€7,345 EUR
$8,206 USD
View
B+
Retailer 12
-
€7,352 EUR
ZAR 132,685 ZAR
View
B
Retailer 13
-
€7,731 EUR
View
B
Retailer 14
-
€8,153 EUR
$9,109 USD
View
Most Expensive
B
Taylor and Hart
UQ0GTR7 · Oct 31
€16,977 EUR
$18,967 USD
View
14 more retailers have this diamond
Prices start from €4,586 EURSave up to €12,392 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
12.31ct Heart
€4,586 EUR