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Marquise|Natural|GIA

0.59ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6551757647

Certificate GIA 6551757647

Diamond specifications and retailer prices

From £515 GBP
SGD 934 SGD
As of October 31, 2026
Save £319 GBP (38%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £834 GBP at Frank Darling · As of November 3, 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 6551757647. Listed at 11 retailers as of October 31, 2026, with prices from £515 to £834, a £319 spread on the same certified stone. Frank Darling lists it at £834. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551757647
Dimensions9.01 × 4.17 × 2.71 mm
L/W Ratio2.16
Culet sizeNone
Top View
9.01 mm4.17 mm0.59 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551757647
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.9%

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: Oct 31
Current: £834 GBP|Low: £515 GBP|High: £857 GBP|Avg: £673 GBP|-2.7%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 7£515 GBP
Retailer 2£520 GBP
Retailer 9£552 GBP
Retailer 3£569 GBP
Retailer 6£615 GBP
Retailer 10£680 GBP
Retailer 4£706 GBP
Retailer 11£732 GBP
Retailer 5£767 GBP
Retailer 8£784 GBP
Frank Darling£834 GBP

39 data points across 11 retailers

11 retailers£515 GBP to £834 GBP

A
Cheapest Retailer
-
£515 GBP
SGD 934 SGD
A
Retailer 2
-
£520 GBP
SGD 943 SGD
View
A
Retailer 3
-
£552 GBP
$741 USD
View
B+
Retailer 4
-
£615 GBP
View
B+
Retailer 5
-
£680 GBP
$913 USD
View
B+
Retailer 6
-
£689 GBP
$925 USD
View
B+
Retailer 7
-
£706 GBP
€902 EUR
View
B
Retailer 8
-
£732 GBP
$982 USD
View
B
Retailer 9
-
£767 GBP
$1,029 USD
View
Retailer 10
-
£784 GBP
$1,051 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Frank Darling
2665110HK · Nov 3
£834 GBP
$1,119 USD
View
10 more retailers have this diamond
Prices start from £515 GBPSave up to £319 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
£515 GBP