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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 $600 USD
As of November 3, 2026
12 retailers carry this diamond
Most expensive: $1,962 USD 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 November 3, 2026. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $1,160 USD|Low: $578 USD|High: $3,277 USD|Avg: $1,319 USD|+1.8%
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$600 USD
Retailer 5$602 USD
Retailer 9$673 USD
Retailer 7$746 USD
Retailer 10$875 USD
Retailer 8$1,144 USD
Retailer 1$1,160 USD
Retailer 4$1,851 USD
Retailer 2$2,279 USD
Retailer 3$3,242 USD

35 data points across 10 retailers

12 retailers

B+
Cheapest Retailer
-
$600 USD
Retailer 2
-
$602 USD
View
Price last confirmed 12 days ago
Retailer 3
-
$674 USD
View
Price last confirmed 11 days ago
Retailer 4
-
$746 USD
View
Price last confirmed 10 days ago
Retailer 5
-
$746 USD
View
Price last confirmed 19 days ago
Retailer 6
-
$875 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$1,144 USD
View
Price last confirmed 9 days ago
Retailer 8
-
$1,160 USD
View
Price last confirmed 8 days ago
Retailer 9
-
$1,851 USD
View
Price under review
Most Expensive
NZ Jewellers
12352762-0446-4f29-94f9-5e4cd698031d · Oct 25
$1,962 USD
View
Price under review
9 more retailers have this diamond
Prices start from $600 USD

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
$600 USD