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Marquise|Lab Grown|HRD

1.51ct G SI1 Marquise Lab Grown Diamond

EX • G/SI1 • HRD 788606925

Certificate HRD 788606925

Diamond specifications and retailer prices

From $1,066 USD
As of November 5, 2026
Save $94 USD (8%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,160 USD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 788606925. Listed at 2 retailers as of November 5, 2026, with a relatively tight 9% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.51
Carat
G
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabHRD
CertificateHRD 788606925
Dimensions11.41 × 6.03 × 3.88 mm
L/W Ratio1.89
Top View
11.41 mm6.03 mm1.51 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 788606925
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 64.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $1,160 USD|Low: $1,066 USD|High: $1,160 USD|Avg: $1,097 USD
Brilliant Earth
Retailer 2
April 16, 2026
Retailer 2$1,066 USD
Brilliant Earth$1,160 USD

2 data points across 2 retailers

2 retailers$1,066 USD to $1,160 USD

B
Cheapest Retailer
-
$1,066 USD
Most Expensive
B
Brilliant Earth
18529741A · Nov 6
$1,160 USD
View
1 more retailer has this diamond
Prices start from $1,066 USDSave up to $94 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
1.51ct Marquise
$1,066 USD