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Marquise|Natural|GIA

0.91ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 1568721643

Certificate GIA 1568721643

Diamond specifications and retailer prices

From £1,225 GBP
As of October 29, 2026
Save £116 GBP (9%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,341 GBP at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 0.91ct natural marquise diamond

This 0.91ct natural marquise sits in the just-under-one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1568721643. Listed at 3 retailers as of October 29, 2026, with a relatively tight 9% 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

0.91
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1568721643
Dimensions9.35 × 5.04 × 3.27 mm
L/W Ratio1.86
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
9.35 mm5.04 mm0.91 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1568721643
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £1,341 GBP|Low: £1,221 GBP|High: £1,341 GBP|Avg: £1,259 GBP
Blue Nile
Retailer 2
Retailer 3
October 29, 2026
Retailer 2£1,225 GBP
Retailer 3£1,250 GBP
Blue Nile£1,341 GBP

2 data points across 3 retailers

3 retailers£1,225 GBP to £1,341 GBP

B
Cheapest Retailer
-
£1,225 GBP
B
Retailer 2
-
£1,250 GBP
SGD 2,266 SGD
View
Most Expensive
B
Blue Nile
30501153 · Oct 29
£1,341 GBP
$1,800 USD
View
2 more retailers have this diamond
Prices start from £1,225 GBPSave up to £116 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
0.91ct Marquise
£1,225 GBP