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Marquise|Natural|GIA

1.00ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1563236191

Certificate GIA 1563236191

Diamond specifications and retailer prices

From £1,217 GBP
As of November 6, 2026
Save £2,071 GBP (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,288 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded I 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 1563236191. Listed at 13 retailers as of November 5, 2026, with prices from £1,217 to £3,288, a £2,071 spread on the same certified stone. NZ Jewellers lists it at £3,288. 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

1.00
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1563236191
Dimensions10.03 × 5.28 × 3.32 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural
Top View
10.03 mm5.28 mm1.00 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1563236191
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 62.8%

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: Nov 6
Current: £3,288 GBP|Low: £1,207 GBP|High: £3,440 GBP|Avg: £1,796 GBP|-4.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8£1,217 GBP
Retailer 2£1,220 GBP
Retailer 12£1,434 GBP
Retailer 4£1,452 GBP
Retailer 6£1,546 GBP
Retailer 11£1,573 GBP
Retailer 5£1,587 GBP
Retailer 10£1,646 GBP
Retailer 3£1,691 GBP
Retailer 13£1,716 GBP
Retailer 9£1,815 GBP
Retailer 7£2,748 GBP
NZ Jewellers£3,288 GBP

29 data points across 13 retailers

13 retailers£1,217 GBP to £3,288 GBP

A
Cheapest Retailer
-
£1,217 GBP
A
Retailer 2
-
£1,220 GBP
View
Retailer 3
-
£1,434 GBP
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£1,452 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,546 GBP
View
A
Retailer 6
-
£1,573 GBP
View
A
Retailer 7
-
£1,587 GBP
View
A
Retailer 8
-
£1,646 GBP
View
Retailer 9
-
£1,691 GBP
View
Price last confirmed 10 days ago
A
Retailer 10
-
£1,716 GBP
View
A
Retailer 11
-
£1,815 GBP
View
B
Retailer 12
-
£2,748 GBP
View
Most Expensive
B
NZ Jewellers
62d3d143-62ec-48a2-b605-e415e9463bd0 · Nov 5
£3,288 GBP
$4,426 USD
View
12 more retailers have this diamond
Prices start from £1,217 GBPSave up to £2,071 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
1.00ct Marquise
£1,217 GBP