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Marquise|Natural|GIA

0.80ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 6565518043

Certificate GIA 6565518043

Diamond specifications and retailer prices

From £675 GBP
$906 USD
As of October 31, 2026
Save £536 GBP (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,212 GBP at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 0.8ct natural marquise diamond

This 0.8ct natural marquise sits in the just-under-one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565518043. Listed at 12 retailers as of October 31, 2026, with prices from £675 to £1,212, a £536 spread on the same certified stone. Helzberg Diamonds lists it at £1,212. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.46°
Pavilion angle39.52°
OriginNatural
Grading LabGIA
CertificateGIA 6565518043
Dimensions9.15 × 4.84 × 3.01 mm
L/W Ratio1.89
Culet sizeNone
Top View
9.15 mm4.84 mm0.80 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565518043
Side View
Table 57.0%Crown 38.46°Girdle: STK-VTKPavilion 39.52°Culet: NoneDepth 62.2%

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: £1,212 GBP|Low: £675 GBP|High: £1,260 GBP|Avg: £893 GBP|-3.8%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6£675 GBP
Retailer 8£678 GBP
Retailer 5£715 GBP
Retailer 11£725 GBP
Retailer 9£736 GBP
Retailer 4£780 GBP
Retailer 7£840 GBP
Retailer 2£981 GBP
Retailer 10£1,040 GBP
Retailer 3£1,141 GBP
Helzberg Diamonds£1,212 GBP

27 data points across 11 retailers

12 retailers£675 GBP to £1,212 GBP

A
Cheapest Retailer
-
£675 GBP
$906 USD
A
Retailer 2
-
£678 GBP
$910 USD
View
A
Retailer 3
-
£715 GBP
$960 USD
View
A
Retailer 4
-
£720 GBP
SGD 1,306 SGD
View
A
Retailer 5
-
£725 GBP
$973 USD
View
A
Retailer 6
-
£736 GBP
SGD 1,335 SGD
View
A
Retailer 7
-
£780 GBP
View
B+
Retailer 8
-
£840 GBP
$1,127 USD
View
B+
Retailer 9
-
£981 GBP
€1,254 EUR
View
B+
Retailer 10
-
£1,040 GBP
$1,395 USD
View
B
Retailer 11
-
£1,141 GBP
$1,531 USD
View
Most Expensive
B
Helzberg Diamonds
XZRMLMLLHOGKJ · Nov 1
£1,212 GBP
$1,626 USD
View
11 more retailers have this diamond
Prices start from £675 GBPSave up to £536 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
£675 GBP