Marquise|Lab Grown|IGI

1.97ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG800664953

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800664953

Diamond specifications and retailer prices

From $370 USD
As of October 30, 2026
Save $2,320 USD (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,690 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.97ct lab-grown marquise diamond

This 1.97ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG800664953 or 800664953. Listed at 17 retailers as of October 30, 2026, with prices from $370 to $2,690, a $2,320 spread on the same certified stone. Brilliant Earth lists it at $2,690. 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

1.97
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800664953
Dimensions13.56 × 6.78 × 3.85 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.56 mm6.78 mm1.97 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800664953
Side View
Table 66.0%Crown 32.6°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 56.8%

Caratlytics Score

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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 30
Current: $2,690 USD|Low: $355 USD|High: $3,400 USD|Avg: $993 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 15$370 USD
Retailer 16$414 USD
Retailer 5$429 USD
Retailer 6$459 USD
Retailer 17$459 USD
Retailer 12$513 USD
Retailer 11$610 USD
Retailer 8$730 USD
Retailer 4$733 USD
Retailer 2$829 USD
Retailer 7$838 USD
Retailer 13$1,346 USD
Retailer 3$1,475 USD
Retailer 9$1,514 USD
Retailer 14$1,736 USD
Retailer 10$1,802 USD
Brilliant Earth$2,690 USD

43 data points across 17 retailers

17 retailers$370 USD to $2,690 USD

A
Cheapest Retailer
-
$370 USD
A
Retailer 2
-
$414 USD
View
Final sale: no returns
A
Retailer 3
-
$429 USD
View
A
Retailer 4
-
$459 USD
View
A
Retailer 5
-
$459 USD
View
Retailer 6
-
$513 USD
£404 GBP
View
Price last confirmed 15 days ago
A
Retailer 7
-
$610 USD
View
B+
Retailer 8
-
$730 USD
View
B+
Retailer 9
-
$733 USD
View
B+
Retailer 10
-
$829 USD
£652 GBP
View
B+
Retailer 11
-
$838 USD
View
B
Retailer 12
-
$1,346 USD
View
B
Retailer 13
-
$1,475 USD
View
B
Retailer 14
-
$1,514 USD
View
B
Retailer 15
-
$1,736 USD
View
B
Retailer 16
-
$1,802 USD
£1,419 GBP
View
Most Expensive
B
Brilliant Earth
21067235A · Oct 31
$2,690 USD
View
16 more retailers have this diamond
Prices start from $370 USDSave up to $2,320 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.

A
1.97ct Marquise
$370 USD