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Marquise|Natural|GIA

0.80ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 3565688587

Certificate GIA 3565688587

Diamond specifications and retailer prices

From £1,004 GBP
SGD 1,817 SGD
As of October 31, 2026
Save £809 GBP (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,812 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 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 3565688587. Listed at 13 retailers as of October 31, 2026, with prices from £1,004 to £1,812, a £809 spread on the same certified stone. Helzberg Diamonds lists it at £1,812. 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
FluorescenceNone
Crown angle39.91°
Pavilion angle39.69°
OriginNatural
Grading LabGIA
CertificateGIA 3565688587
Dimensions9.03 × 4.77 × 3.05 mm
L/W Ratio1.89
Culet sizeNone
Top View
9.03 mm4.77 mm0.80 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3565688587
Side View
Table 59.0%Crown 39.91°Girdle: STK-VTKPavilion 39.69°Culet: NoneDepth 63.9%

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: £1,812 GBP|Low: £1,011 GBP|High: £1,812 GBP|Avg: £1,323 GBP
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£1,011 GBP
Retailer 6£1,026 GBP
Retailer 9£1,028 GBP
Retailer 12£1,064 GBP
Retailer 4£1,101 GBP
Retailer 5£1,120 GBP
Retailer 7£1,269 GBP
Retailer 3£1,390 GBP
Retailer 2£1,454 GBP
Retailer 11£1,541 GBP
Retailer 10£1,631 GBP
Helzberg Diamonds£1,812 GBP

11 data points across 12 retailers

13 retailers£1,004 GBP to £1,812 GBP

A
Cheapest Retailer
-
£1,004 GBP
SGD 1,817 SGD
A
Retailer 2
-
£1,011 GBP
$1,355 USD
View
A
Retailer 3
-
£1,026 GBP
$1,375 USD
View
A
Retailer 4
-
£1,028 GBP
$1,378 USD
View
A
Retailer 5
-
£1,064 GBP
$1,426 USD
View
A
Retailer 6
-
£1,101 GBP
SGD 1,993 SGD
View
A
Retailer 7
-
£1,120 GBP
View
B+
Retailer 8
-
£1,269 GBP
$1,700 USD
View
B+
Retailer 9
-
£1,390 GBP
$1,863 USD
View
B+
Retailer 10
-
£1,454 GBP
€1,855 EUR
View
B
Retailer 11
-
£1,541 GBP
$2,065 USD
View
B
Retailer 12
-
£1,631 GBP
$2,186 USD
View
Most Expensive
B
Helzberg Diamonds
XZRJLMLMOOLON · Nov 2
£1,812 GBP
$2,428 USD
View
12 more retailers have this diamond
Prices start from £1,004 GBPSave up to £809 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
£1,004 GBP