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Marquise|Natural|GIA

1.56ct G SI2 Marquise Natural Diamond

VG • G/SI2

Diamond specifications and retailer prices

From £6,431 GBP
$8,630 USD
As of October 27, 2026
Save £360 GBP (5%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £6,791 GBP at Diamond Exchange Canada · As of November 2, 2026
View at Diamond Exchange Canada

About this 1.56ct natural marquise diamond

This 1.56ct natural marquise sits in the one-and-a-half to two 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. Listed at 2 retailers as of October 27, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.56
Carat
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
Dimensions11.07 × 5.99 × 3.85 mm
L/W Ratio1.85
Top View
11.07 mm5.99 mm1.56 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 27
Current: £6,791 GBP|Low: £6,431 GBP|High: £12,196 GBP|Avg: £8,425 GBP
Diamond Exchange Canada
Retailer 2
Retailer 3
October 27, 2026
Retailer 3£6,431 GBP
Diamond Exchange Canada£6,791 GBP
Retailer 2£11,401 GBP

5 data points across 3 retailers

2 retailers£6,431 GBP to £6,791 GBP

B+
Cheapest Retailer
-
£6,431 GBP
$8,630 USD
Most Expensive
B
Diamond Exchange Canada
1989733867 · Nov 2
£6,791 GBP
CA$12,657 CAD
View
1 more retailer has this diamond
Prices start from £6,431 GBPSave up to £360 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.

B+
1.56ct Marquise
£6,431 GBP