CaratHunter
Plans
Marquise|Lab Grown|IGI

1.00ct G SI1 Marquise Lab Grown Diamond

ID • G/SI1 • IGI LG512204063

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG512204063

Diamond specifications and retailer prices

From €537 EUR
$600 USD
As of October 31, 2026
Save €501 EUR (48%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,756 EUR at NZ Jewellers · As of October 25, 2026
View at NZ Jewellers

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512204063 or 512204063. Listed at 12 retailers as of October 27, 2026, with a 93% 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

1.00
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512204063
Dimensions10.91 × 5.16 × 2.94 mm
L/W Ratio2.11
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
10.91 mm5.16 mm1.00 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512204063
Side View
Table 56.5%Crown 38.8°Girdle: MED-STKPavilion 33.3°Culet: NoneDepth 57.0%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: €1,039 EUR|Low: €517 EUR|High: €2,934 EUR|Avg: €1,174 EUR|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 27, 2026
Retailer 6€537 EUR
Retailer 5€539 EUR
Retailer 9€602 EUR
Retailer 7€668 EUR
Retailer 10€783 EUR
Retailer 8€1,024 EUR
Retailer 1€1,039 EUR
Retailer 4€1,657 EUR
Retailer 2€2,040 EUR
Retailer 3€2,902 EUR

37 data points across 10 retailers

12 retailers€537 EUR to €1,039 EUR

B+
Cheapest Retailer
-
€537 EUR
$600 USD
Retailer 2
-
€539 EUR
$602 USD
View
Price last confirmed 9 days ago
Retailer 3
-
€603 EUR
$674 USD
View
Price last confirmed 8 days ago
B
Retailer 4
-
€668 EUR
$746 USD
View
Retailer 5
-
€668 EUR
$746 USD
View
Price last confirmed 16 days ago
B
Retailer 6
-
€783 EUR
$875 USD
View
B
Retailer 7
-
€1,024 EUR
$1,144 USD
View
B
Retailer 8
-
€1,039 EUR
£914 GBP
View
Retailer 9
-
€1,657 EUR
$1,851 USD
View
Price under review
Most Expensive
NZ Jewellers
12352762-0446-4f29-94f9-5e4cd698031d · Oct 25
€1,756 EUR
$1,962 USD
View
Price under review
9 more retailers have this diamond
Prices start from €537 EURSave up to €501 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+
1.00ct Marquise
€537 EUR