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Marquise|Natural|GIA

0.80ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6541502138

Certificate GIA 6541502138

Diamond specifications and retailer prices

From £790 GBP
$1,058 USD
As of November 2, 2026
Save £474 GBP (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,264 GBP at Cape Diamonds · As of October 26, 2026
View at Cape Diamonds

About this 0.8ct natural marquise diamond

This 0.8ct natural marquise sits in the just-under-one-carat band, graded I 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 6541502138. Listed at 9 retailers as of October 26, 2026, with prices from £790 to £1,264, a £474 spread on the same certified stone. Cape Diamonds lists it at £1,264. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36.52°
Pavilion angle42.11°
OriginNatural
Grading LabGIA
CertificateGIA 6541502138
Dimensions9.16 × 4.84 × 3.10 mm
L/W Ratio1.89
Top View
9.16 mm4.84 mm0.80 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6541502138
Side View
Table 61.0%Crown 36.52°Girdle: MED-VTKPavilion 42.11°Culet: NoneDepth 64.1%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £1,264 GBP|Low: £743 GBP|High: £1,303 GBP|Avg: £1,009 GBP|-1.6%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6£790 GBP
Retailer 4£821 GBP
Retailer 7£821 GBP
Retailer 3£968 GBP
Retailer 2£1,080 GBP
Retailer 5£1,091 GBP
Retailer 8£1,092 GBP
Retailer 9£1,149 GBP
Cape Diamonds£1,264 GBP

30 data points across 9 retailers

9 retailers£790 GBP to £1,264 GBP

A
Cheapest Retailer
-
£790 GBP
$1,058 USD
Final sale: no returns
A
Retailer 2
-
£821 GBP
$1,100 USD
View
A
Retailer 3
-
£821 GBP
$1,100 USD
View
A
Retailer 4
-
£968 GBP
View
A
Retailer 5
-
£1,080 GBP
View
B+
Retailer 6
-
£1,091 GBP
$1,462 USD
View
B+
Retailer 7
-
£1,092 GBP
$1,463 USD
View
Retailer 8
-
£1,149 GBP
A$2,369 AUD
View
Price last confirmed 28 days ago
Most Expensive
B+
Cape Diamonds
cert_6541502138 · Oct 26
£1,264 GBP
ZAR 27,351 ZAR
View
8 more retailers have this diamond
Prices start from £790 GBPSave up to £474 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
0.80ct Marquise
£790 GBP