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Marquise|Natural|GIA

0.80ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 5242028344

Certificate GIA 5242028344

Diamond specifications and retailer prices

From £986 GBP
SGD 1,786 SGD
As of October 31, 2026
Save £792 GBP (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,779 GBP at Helzberg Diamonds · As of November 2, 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 H 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 5242028344. Listed at 12 retailers as of October 31, 2026, with prices from £986 to £1,779, a £792 spread on the same certified stone. Helzberg Diamonds lists it at £1,779. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.84°
Pavilion angle40.57°
OriginNatural
Grading LabGIA
CertificateGIA 5242028344
Dimensions9.24 × 4.79 × 3.02 mm
L/W Ratio1.93
Culet sizeNone
Top View
9.24 mm4.79 mm0.80 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5242028344
Side View
Table 59.0%Crown 38.84°Girdle: MED-VTKPavilion 40.57°Culet: NoneDepth 63.0%

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: £1,779 GBP|Low: £986 GBP|High: £1,832 GBP|Avg: £1,237 GBP|-2.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 8£986 GBP
Retailer 9£992 GBP
Retailer 7£1,004 GBP
Retailer 11£1,009 GBP
Retailer 3£1,080 GBP
Retailer 5£1,100 GBP
Retailer 10£1,206 GBP
Retailer 6£1,245 GBP
Retailer 4£1,370 GBP
Retailer 2£1,427 GBP
Retailer 12£1,597 GBP
Helzberg Diamonds£1,779 GBP

31 data points across 12 retailers

12 retailers£986 GBP to £1,779 GBP

A
Cheapest Retailer
-
£986 GBP
SGD 1,786 SGD
A
Retailer 2
-
£992 GBP
$1,329 USD
View
A
Retailer 3
-
£1,004 GBP
$1,345 USD
View
A
Retailer 4
-
£1,009 GBP
$1,352 USD
View
A
Retailer 5
-
£1,080 GBP
SGD 1,956 SGD
View
A
Retailer 6
-
£1,100 GBP
View
B+
Retailer 7
-
£1,206 GBP
$1,616 USD
View
B+
Retailer 8
-
£1,245 GBP
$1,668 USD
View
B+
Retailer 9
-
£1,370 GBP
$1,836 USD
View
B+
Retailer 10
-
£1,427 GBP
€1,821 EUR
View
B
Retailer 11
-
£1,597 GBP
$2,140 USD
View
Most Expensive
B
Helzberg Diamonds
XZRLIKIGIOJKK · Nov 2
£1,779 GBP
$2,383 USD
View
11 more retailers have this diamond
Prices start from £986 GBPSave up to £792 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
£986 GBP