CaratHunter
Plans
Marquise|Lab Grown|IGI

1.31ct H VS1 Marquise Lab Grown Diamond

ID • H/VS1 • IGI LG512231547

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG512231547

Diamond specifications and retailer prices

From $890 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: $890 USD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.31ct lab-grown marquise diamond

This 1.31ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG512231547 or 512231547. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
H
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512231547
Dimensions11.54 × 5.71 × 3.43 mm
L/W Ratio2.02
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
11.54 mm5.71 mm1.31 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512231547
Side View
Table 61.0%Crown 34.5°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
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 31
Current: $890 USD|Low: $749 USD|High: $3,547 USD|Avg: $2,097 USD|-44.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
September 12, 2026
Retailer 7$749 USD
Brilliant Earth$890 USD
Retailer 3$1,042 USD
Retailer 6$1,265 USD
Retailer 10$1,593 USD
Retailer 4$1,717 USD
Retailer 2$1,927 USD
Retailer 9$2,273 USD
Retailer 5$2,789 USD
Retailer 11$3,114 USD
Retailer 8$3,236 USD

79 data points across 11 retailers

1 retailer

B
Brilliant Earth
19748838A · Oct 31
$890 USD
View

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
1.31ct Marquise
$890 USD