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Round|Lab Grown|IGI

5.12ct G SI1 Round Lab Grown Diamond

ID • G/SI1

Diamond specifications and retailer prices

From €945 EUR
£832 GBP
As of November 1, 2026
Save €1,467 EUR (61%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €2,412 EUR at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 5.12ct lab-grown round diamond

This 5.12ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 3 retailers as of October 28, 2026, with prices from €945 to €2,412, a €1,467 spread on the same certified stone. Rare Carat lists it at €2,412. 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

5.12
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions10.97 × 11.04 × 6.82 mm
L/W Ratio1.01
Top View
10.97 mm11.04 mm5.12 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 57.0%CrownGirdle: Med.PavilionCulet: NoneDepth 62.0%

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: €2,412 EUR|Low: €654 EUR|High: €2,723 EUR|Avg: €1,558 EUR|-11.4%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4€654 EUR
Retailer 2€945 EUR
Retailer 3€2,157 EUR
Rare Carat€2,412 EUR

41 data points across 4 retailers

3 retailers€945 EUR to €2,412 EUR

B+
Cheapest Retailer
-
€945 EUR
£832 GBP
B
Retailer 2
-
€2,157 EUR
CA$3,347 CAD
View
Most Expensive
B
Rare Carat
138509 · Oct 28
€2,412 EUR
$2,695 USD
View
2 more retailers have this diamond
Prices start from €945 EURSave up to €1,467 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+
5.12ct Round
€945 EUR