Marquise|Lab Grown|IGI

1.05ct H SI1 Marquise Lab Grown Diamond

ID • H/SI1 • IGI LG843623987

Shape and cutting style on the report: Marquise rose cut

Certificate IGI LG843623987

Diamond specifications and retailer prices

From €3,125 EUR
$3,491 USD
As of October 30, 2026
Save €1,405 EUR (31%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €6,177 EUR at Yorxs · As of October 25, 2026
View at Yorxs

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG843623987 or 843623987. Listed at 11 retailers as of October 30, 2026, with a 45% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.05
Carat
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843623987
Dimensions8.94 × 5.79 × 2.98 mm
L/W Ratio1.54
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.94 mm5.79 mm1.05 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843623987
Side View
Table 62.0%Crown 35.1°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 51.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €3,495 EUR|Low: €3,125 EUR|High: €10,755 EUR|Avg: €5,135 EUR|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Yorxs
October 30, 2026
Retailer 3€3,125 EUR
Retailer 10€3,400 EUR
Retailer 1€3,495 EUR
Retailer 8€3,500 EUR
Retailer 6€3,625 EUR
Retailer 9€4,530 EUR
Retailer 5€5,300 EUR
Retailer 2€5,730 EUR
Yorxs€6,177 EUR
Retailer 7€7,806 EUR
Retailer 4€10,551 EUR

8 data points across 11 retailers

11 retailers€3,125 EUR to €4,530 EUR

B
Cheapest Retailer
-
€3,125 EUR
$3,491 USD
B
Retailer 2
-
€3,400 EUR
$3,799 USD
View
B
Retailer 3
-
€3,495 EUR
$3,905 USD
View
B
Retailer 4
-
€3,500 EUR
$3,910 USD
View
Final sale: no returns
B
Retailer 5
-
€3,625 EUR
$4,050 USD
View
B
Retailer 6
-
€4,530 EUR
$5,061 USD
View
Retailer 7
-
€5,300 EUR
£4,662 GBP
View
Price under review
Retailer 8
-
€5,730 EUR
$6,402 USD
View
Price under review
Most Expensive
Yorxs
EABCA05B2 · Oct 25
€6,177 EUR
View
Price under review
8 more retailers have this diamond
Prices start from €3,125 EURSave up to €1,405 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
1.05ct Marquise
€3,125 EUR