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Marquise|Natural|GIA

0.85ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 1559900837

Certificate GIA 1559900837

Diamond specifications and retailer prices

From £1,034 GBP
$1,385 USD
As of November 2, 2026
Save £2,138 GBP (67%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,172 GBP at Diamond Wish · As of November 1, 2026
View at Diamond Wish

About this 0.85ct natural marquise diamond

This 0.85ct natural marquise sits in the just-under-one-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 1559900837. Listed at 7 retailers as of November 1, 2026, with prices from £1,034 to £3,172, a £2,138 spread on the same certified stone. Diamond Wish lists it at £3,172. 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

0.85
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559900837
Dimensions9.24 × 4.99 × 3.15 mm
L/W Ratio1.85
Culet sizeNone
Top View
9.24 mm4.99 mm0.85 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559900837
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.1%

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: £2,974 GBP|Low: £535 GBP|High: £2,974 GBP|Avg: £1,063 GBP
Diamond Wish
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 17, 2026
Retailer 4£535 GBP
Retailer 2£653 GBP
Retailer 3£666 GBP
Retailer 10£744 GBP
Retailer 7£766 GBP
Retailer 8£794 GBP
Retailer 11£920 GBP
Retailer 5£1,034 GBP
Retailer 13£1,096 GBP
Retailer 9£1,096 GBP
Retailer 6£1,112 GBP
Retailer 12£1,220 GBP
Diamond Wish£2,974 GBP

16 data points across 13 retailers

7 retailers£1,034 GBP to £3,172 GBP

Retailer 1
-
£653 GBP
SGD 1,183 SGD
Price last confirmed 11 days ago
Retailer 2
-
£744 GBP
$997 USD
View
Price last confirmed 19 days ago
Retailer 3
-
£766 GBP
$1,027 USD
View
Price last confirmed 17 days ago
Retailer 4
-
£794 GBP
SGD 1,438 SGD
View
Price last confirmed 17 days ago
A
Retailer 5
-
£1,034 GBP
$1,385 USD
View
Retailer 6
-
£1,220 GBP
$1,634 USD
View
Price last confirmed 18 days ago
Most Expensive
B
Diamond Wish
MQ30085 · Nov 1
£3,172 GBP
$4,250 USD
View
6 more retailers have this diamond
Prices start from £1,034 GBPSave up to £2,138 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
0.85ct Marquise
£1,034 GBP