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Marquise|Natural|GIA

1.30ct G SI2 Marquise Natural Diamond

EX • G/SI2 • GIA 6565597558

Certificate GIA 6565597558

Diamond specifications and retailer prices

From £4,408 GBP
$5,900 USD
As of November 4, 2026
2 retailers carry this diamond
Most expensive: £4,408 GBP at The Perfect Carat
View at The Perfect Carat

About this 1.3ct natural marquise diamond

This 1.3ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565597558. Listed at 2 retailers as of November 4, 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

1.30
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.62°
Pavilion angle37.88°
OriginNatural
Grading LabGIA
CertificateGIA 6565597558
Dimensions11.12 × 5.85 × 3.39 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.12 mm5.85 mm1.30 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565597558
Side View
Table 58.0%Crown 36.62°Girdle: MED-THKPavilion 37.88°Culet: NDepth 58.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £2,930 GBP|Low: £2,869 GBP|High: £4,408 GBP|Avg: £3,177 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
The Perfect Carat
November 4, 2026
Retailer 3£2,869 GBP
Retailer 1£2,930 GBP
Retailer 2£3,102 GBP
Retailer 4£3,289 GBP
The Perfect Carat£4,408 GBP

3 data points across 5 retailers

2 retailers

Retailer 1
-
£2,930 GBP
Price last confirmed 21 days ago
Most Expensive
B+
The Perfect Carat
tpc_cdda884e-2cbd-482f-bbd5-7a399792427b · Nov 4
£4,408 GBP
$5,900 USD
View
1 more retailer has this diamond

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+
1.30ct Marquise
£4,408 GBP