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Marquise|Natural|GIA

1.00ct G SI2 Marquise Natural Diamond

ID • G/SI2 • GIA 1549809718

Certificate GIA 1549809718

Diamond specifications and retailer prices

From £1,811 GBP
As of November 6, 2026
Save £324 GBP (15%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,420 GBP at NZ Jewellers · As of October 27, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1549809718. Listed at 18 retailers as of November 6, 2026, with a relatively tight 18% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1549809718
Dimensions9.69 × 5.18 × 3.30 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Indented Natural
Top View
9.69 mm5.18 mm1.00 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1549809718
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.8%

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: £4,420 GBP|Low: £1,597 GBP|High: £4,420 GBP|Avg: £2,463 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
November 6, 2026
Retailer 7£1,597 GBP
Retailer 14£1,687 GBP
Retailer 2£1,811 GBP
Retailer 10£1,890 GBP
Retailer 6£1,951 GBP
Retailer 11£2,102 GBP
Retailer 5£2,114 GBP
Retailer 17£2,114 GBP
Retailer 3£2,196 GBP
Retailer 8£2,220 GBP
Retailer 12£2,246 GBP
Retailer 9£2,301 GBP
Retailer 4£2,439 GBP
Retailer 15£2,461 GBP
Retailer 16£3,709 GBP
Retailer 13£3,748 GBP
NZ Jewellers£4,420 GBP

25 data points across 17 retailers

18 retailers£1,811 GBP to £2,135 GBP

Retailer 1
-
£1,597 GBP
Price last confirmed 8 days ago
Retailer 2
-
£1,687 GBP
View
Price last confirmed 10 days ago
A
Retailer 3
-
£1,811 GBP
View
A
Retailer 4
-
£1,890 GBP
View
A
Retailer 5
-
£2,007 GBP
View
Retailer 6
-
£2,102 GBP
View
Price last confirmed 9 days ago
Retailer 7
-
£2,114 GBP
View
Price last confirmed 12 days ago
Retailer 8
-
£2,114 GBP
View
Price last confirmed 11 days ago
B+
Retailer 9
-
£2,135 GBP
View
Retailer 10
-
£2,196 GBP
View
Price last confirmed 12 days ago
Retailer 11
-
£2,220 GBP
View
Price last confirmed 12 days ago
Retailer 12
-
£2,246 GBP
View
Price last confirmed 9 days ago
Retailer 13
-
£2,301 GBP
View
Price last confirmed 11 days ago
Retailer 14
-
£2,439 GBP
View
Price last confirmed 10 days ago
Retailer 15
-
£2,461 GBP
View
Price last confirmed 11 days ago
Retailer 16
-
£3,709 GBP
View
Price last confirmed 11 days ago
Retailer 17
-
£3,748 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
45920c58-3b73-42cf-888a-baa52bbfcc3f · Oct 27
£4,420 GBP
$5,916 USD
View
Price last confirmed 10 days ago
17 more retailers have this diamond
Prices start from £1,811 GBPSave up to £324 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
£1,811 GBP