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Marquise|Natural|GIA

0.80ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 6425985290

Certificate GIA 6425985290

Diamond specifications and retailer prices

From £1,408 GBP
$1,890 USD
As of November 1, 2026
Save £1,281 GBP (48%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,690 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.8ct natural marquise diamond

This 0.8ct natural marquise sits in the just-under-one-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 GIA 6425985290. Listed at 5 retailers as of November 1, 2026, with prices from £1,408 to £2,690, a £1,281 spread on the same certified stone. MOH London lists it at £2,690. 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

0.80
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6425985290
Dimensions9.56 × 4.80 × 3.03 mm
L/W Ratio1.99
Top View
9.56 mm4.80 mm0.80 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6425985290
Side View
Table 56.0%CrownGirdle: Med. - Very ThickPavilionCulet: NoneDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,690 GBP|Low: £1,408 GBP|High: £2,704 GBP|Avg: £1,857 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 4£1,408 GBP
Retailer 5£1,462 GBP
Retailer 3£1,670 GBP
Retailer 2£2,097 GBP
MOH London£2,690 GBP

18 data points across 5 retailers

5 retailers£1,408 GBP to £2,690 GBP

B+
Cheapest Retailer
-
£1,408 GBP
$1,890 USD
B+
Retailer 2
-
£1,462 GBP
$1,962 USD
View
B+
Retailer 3
-
£1,670 GBP
View
B
Retailer 4
-
£2,097 GBP
€2,680 EUR
View
Most Expensive
B
MOH London
D4466BE69 · Nov 1
£2,690 GBP
View
4 more retailers have this diamond
Prices start from £1,408 GBPSave up to £1,281 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.

B+
0.80ct Marquise
£1,408 GBP