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Marquise|Natural|GIA

1.00ct G SI2 Marquise Natural Diamond

VG • G/SI2 • GIA 5566421584

Certificate GIA 5566421584

Diamond specifications and retailer prices

From £1,817 GBP
As of November 6, 2026
Save £2,377 GBP (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,194 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5566421584. Listed at 18 retailers as of November 5, 2026, with prices from £1,817 to £4,194, a £2,377 spread on the same certified stone. NZ Jewellers lists it at £4,194. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5566421584
Dimensions11.35 × 5.08 × 2.99 mm
L/W Ratio2.23
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural, Natural
Top View
11.35 mm5.08 mm1.00 ctG / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5566421584
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.8%

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: £4,194 GBP|Low: £1,798 GBP|High: £4,194 GBP|Avg: £2,657 GBP
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 17£1,817 GBP
Retailer 2£1,876 GBP
Retailer 15£2,185 GBP
Retailer 10£2,194 GBP
Retailer 9£2,222 GBP
Retailer 11£2,367 GBP
Retailer 3£2,407 GBP
Retailer 6£2,407 GBP
Retailer 13£2,490 GBP
Retailer 4£2,500 GBP
Retailer 7£2,514 GBP
Retailer 12£2,521 GBP
Retailer 8£2,585 GBP
Retailer 5£2,777 GBP
Retailer 16£2,817 GBP
Retailer 18£3,985 GBP
Retailer 14£4,014 GBP
NZ Jewellers£4,194 GBP

22 data points across 18 retailers

18 retailers£1,817 GBP to £4,194 GBP

A
Cheapest Retailer
-
£1,817 GBP
A
Retailer 2
-
£1,876 GBP
View
B+
Retailer 3
-
£2,185 GBP
View
B+
Retailer 4
-
£2,194 GBP
View
B+
Retailer 5
-
£2,222 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,367 GBP
View
Retailer 7
-
£2,407 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,407 GBP
View
B+
Retailer 9
-
£2,490 GBP
View
B+
Retailer 10
-
£2,500 GBP
View
B+
Retailer 11
-
£2,514 GBP
View
B+
Retailer 12
-
£2,521 GBP
View
B+
Retailer 13
-
£2,585 GBP
View
B
Retailer 14
-
£2,777 GBP
View
B
Retailer 15
-
£2,817 GBP
View
Retailer 16
-
£3,985 GBP
View
Price last confirmed 9 days ago
B
Retailer 17
-
£4,014 GBP
View
Most Expensive
B
NZ Jewellers
e4aa9aa6-2533-40a2-b33e-68ca3d0f3a39 · Nov 5
£4,194 GBP
$5,613 USD
View
17 more retailers have this diamond
Prices start from £1,817 GBPSave up to £2,377 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
£1,817 GBP