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1.33ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG492123252

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492123252

Diamond specifications and retailer prices

From €564 EUR
$630 USD
As of October 29, 2026
Save €2,208 EUR (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €2,771 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.33ct lab-grown round diamond

This 1.33ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492123252 or 492123252. Listed at 11 retailers as of October 29, 2026, with prices from €564 to €2,771, a €2,208 spread on the same certified stone. MOH London lists it at €2,771. 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

1.33
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123252
Dimensions7.11 × 7.12 × 4.30 mm
L/W Ratio1.00
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
7.11 mm7.12 mm1.33 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492123252
Side View
Table 59.5%Crown 33°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €2,771 EUR|Low: €542 EUR|High: €2,790 EUR|Avg: €1,066 EUR|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5€564 EUR
Retailer 8€632 EUR
Retailer 6€654 EUR
Retailer 9€654 EUR
Retailer 2€680 EUR
Retailer 3€815 EUR
Retailer 7€1,070 EUR
Retailer 10€1,070 EUR
Retailer 4€1,672 EUR
MOH London€2,771 EUR

21 data points across 10 retailers

11 retailers€564 EUR to €2,771 EUR

A
Cheapest Retailer
-
€564 EUR
$630 USD
A
Retailer 2
-
€614 EUR
$686 USD
View
A
Retailer 3
-
€632 EUR
$706 USD
View
Final sale: no returns
Retailer 4
-
€654 EUR
$731 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
€654 EUR
$731 USD
View
B+
Retailer 6
-
€680 EUR
$760 USD
View
B+
Retailer 7
-
€815 EUR
$910 USD
View
B
Retailer 8
-
€1,070 EUR
$1,195 USD
View
B
Retailer 9
-
€1,672 EUR
$1,868 USD
View
B
Retailer 10
-
€1,840 EUR
$2,056 USD
View
Most Expensive
B
MOH London
LG492123252 · Oct 29
€2,771 EUR
£2,438 GBP
View
10 more retailers have this diamond
Prices start from €564 EURSave up to €2,208 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
1.33ct Round
€564 EUR