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Marquise|Natural|GIA

0.59ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6542558302

Certificate GIA 6542558302

Diamond specifications and retailer prices

From £522 GBP
$700 USD
As of November 2, 2026
Save £356 GBP (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £878 GBP at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 0.59ct natural marquise diamond

This 0.59ct natural marquise sits in the half to three-quarter carat band, graded H 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 GIA 6542558302. Listed at 14 retailers as of November 2, 2026, with prices from £522 to £878, a £356 spread on the same certified stone. Frank Darling lists it at £878. 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

0.59
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.68°
Pavilion angle38.13°
OriginNatural
Grading LabGIA
CertificateGIA 6542558302
Dimensions8.33 × 4.40 × 2.66 mm
L/W Ratio1.89
Top View
8.33 mm4.40 mm0.59 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542558302
Side View
Table 61.0%Crown 38.68°Girdle: STK-THKPavilion 38.13°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £878 GBP|Low: £522 GBP|High: £889 GBP|Avg: £698 GBP|-1.2%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 10£522 GBP
Retailer 13£551 GBP
Retailer 3£566 GBP
Retailer 9£580 GBP
Retailer 11£593 GBP
Retailer 2£628 GBP
Retailer 5£701 GBP
Retailer 8£737 GBP
Retailer 6£761 GBP
Retailer 12£793 GBP
Retailer 7£830 GBP
Retailer 4£846 GBP
Frank Darling£878 GBP

46 data points across 13 retailers

14 retailers£522 GBP to £878 GBP

A
Cheapest Retailer
-
£522 GBP
$700 USD
A
Retailer 2
-
£551 GBP
SGD 1,000 SGD
View
A
Retailer 3
-
£566 GBP
SGD 1,027 SGD
View
B+
Retailer 4
-
£580 GBP
$778 USD
View
B+
Retailer 5
-
£593 GBP
$796 USD
View
B+
Retailer 6
-
£628 GBP
View
Retailer 7
-
£701 GBP
View
Price last confirmed 40 days ago
B
Retailer 8
-
£732 GBP
$982 USD
View
B
Retailer 9
-
£737 GBP
$989 USD
View
B
Retailer 10
-
£761 GBP
€973 EUR
View
B
Retailer 11
-
£793 GBP
$1,064 USD
View
B
Retailer 12
-
£830 GBP
$1,114 USD
View
B
Retailer 13
-
£846 GBP
$1,136 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Frank Darling
2585300HK · Nov 2
£878 GBP
$1,178 USD
View
13 more retailers have this diamond
Prices start from £522 GBPSave up to £356 GBP

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
0.59ct Marquise
£522 GBP