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Round|Lab Grown|IGI

15.32ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG587311321

Shape and cutting style on the report: Round brilliant

Certificate IGI LG587311321

Diamond specifications and retailer prices

From €4,723 EUR
£4,154 GBP
As of November 1, 2026
Save €14,092 EUR (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €18,815 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 15.32ct lab-grown round diamond

This 15.32ct lab-grown round sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG587311321 or 587311321. Listed at 8 retailers as of October 31, 2026, with prices from €4,723 to €18,815, a €14,092 spread on the same certified stone. Brilliant Earth lists it at €18,815. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

15.32
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG587311321
Dimensions16.05 × 16.15 × 9.77 mm
L/W Ratio1.01
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
16.05 mm16.15 mm15.32 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG587311321
Side View
Table 56.0%Crown 33.9°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €18,815 EUR|Low: €4,721 EUR|High: €44,636 EUR|Avg: €12,470 EUR|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 2€4,723 EUR
Retailer 7€5,677 EUR
Retailer 10€7,023 EUR
Retailer 5€7,114 EUR
Retailer 4€7,116 EUR
Retailer 6€9,078 EUR
Retailer 8€9,308 EUR
Retailer 11€11,678 EUR
Retailer 9€11,692 EUR
Brilliant Earth€18,815 EUR
Retailer 3€44,636 EUR

35 data points across 11 retailers

8 retailers€4,723 EUR to €18,815 EUR

B+
Cheapest Retailer
-
€4,723 EUR
£4,154 GBP
B+
Retailer 2
-
€5,677 EUR
$6,342 USD
View
Final sale: no returns
B
Retailer 3
-
€7,023 EUR
HK$61,300 HKD
View
B
Retailer 4
-
€7,114 EUR
$7,948 USD
View
B
Retailer 5
-
€7,116 EUR
$7,950 USD
View
B
Retailer 6
-
€9,078 EUR
$10,142 USD
View
B
Retailer 7
-
€11,692 EUR
$13,062 USD
View
Most Expensive
B
Brilliant Earth
8428522A · Oct 31
€18,815 EUR
$21,020 USD
View
7 more retailers have this diamond
Prices start from €4,723 EURSave up to €14,092 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.

B+
15.32ct Round
€4,723 EUR