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Radiant|Lab Grown|IGI

12.56ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG603334337

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG603334337

Diamond specifications and retailer prices

From €3,616 EUR
$4,040 USD
As of October 30, 2026
Save €14,644 EUR (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €18,260 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.56ct lab-grown radiant diamond

This 12.56ct lab-grown radiant sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG603334337 or 603334337. Listed at 20 retailers as of October 30, 2026, with prices from €3,616 to €18,260, a €14,644 spread on the same certified stone. Brilliant Earth lists it at €18,260. 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

12.56
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.3°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG603334337
Dimensions14.83 × 12.00 × 8.25 mm
L/W Ratio1.24
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
14.83 mm12.00 mm12.56 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG603334337
Side View
Table 69.0%Crown 45.3°Girdle: MediumPavilion 37.8°Culet: NoneDepth 68.8%

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 30
Current: €18,260 EUR|Low: €3,471 EUR|High: €18,260 EUR|Avg: €6,761 EUR
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 11€3,616 EUR
Retailer 3€4,048 EUR
Retailer 12€4,194 EUR
Retailer 8€4,198 EUR
Retailer 13€4,285 EUR
Retailer 2€5,464 EUR
Retailer 9€5,563 EUR
Retailer 4€5,879 EUR
Retailer 7€6,492 EUR
Retailer 10€6,496 EUR
Retailer 6€7,888 EUR
Retailer 5€10,635 EUR
Brilliant Earth€18,260 EUR

42 data points across 13 retailers

20 retailers€3,616 EUR to €18,260 EUR

A
Cheapest Retailer
-
€3,616 EUR
$4,040 USD
A
Retailer 2
-
€3,790 EUR
$4,234 USD
View
A
Retailer 3
-
€4,048 EUR
$4,523 USD
View
Final sale: no returns
B+
Retailer 4
-
€4,194 EUR
$4,686 USD
View
Retailer 5
-
€4,194 EUR
$4,686 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
€4,198 EUR
$4,690 USD
View
B+
Retailer 7
-
€4,285 EUR
$4,787 USD
View
B+
Retailer 8
-
€4,949 EUR
HK$43,200 HKD
View
B+
Retailer 9
-
€5,242 EUR
$5,856 USD
View
B+
Retailer 10
-
€5,464 EUR
£4,807 GBP
View
B+
Retailer 11
-
€5,563 EUR
$6,215 USD
View
B+
Retailer 12
-
€5,879 EUR
£5,172 GBP
View
B+
Retailer 13
-
€6,492 EUR
ZAR 117,171 ZAR
View
B+
Retailer 14
-
€6,496 EUR
$7,257 USD
View
B
Retailer 15
-
€7,888 EUR
$8,813 USD
View
B
Retailer 16
-
€8,784 EUR
$9,813 USD
View
Retailer 17
-
€10,635 EUR
$11,882 USD
View
Price last confirmed 19 days ago
B
Retailer 18
-
€11,650 EUR
$13,015 USD
View
B
Retailer 19
-
€14,891 EUR
$16,636 USD
View
Most Expensive
B
Brilliant Earth
10597375A · Oct 31
€18,260 EUR
$20,400 USD
View
19 more retailers have this diamond
Prices start from €3,616 EURSave up to €14,644 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
12.56ct Radiant
€3,616 EUR