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Marquise|Natural|GIA

0.49ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6551236919

Certificate GIA 6551236919

Diamond specifications and retailer prices

From £621 GBP
$833 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: £621 GBP at The Diamond Guys
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at The Diamond Guys

About this 0.49ct natural marquise diamond

This 0.49ct natural marquise sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551236919. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

0.49
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.89°
Pavilion angle39.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551236919
Dimensions7.96 × 4.14 × 2.55 mm
L/W Ratio1.92
Top View
7.96 mm4.14 mm0.49 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551236919
Side View
Table 59.0%Crown 35.89°Girdle: STK-VTKPavilion 39.6°Culet: NoneDepth 61.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: £642 GBP|Low: £291 GBP|High: £777 GBP|Avg: £576 GBP|-6.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
The Diamond Guys
August 13, 2026
Retailer 11£291 GBP
Retailer 7£472 GBP
Retailer 2£475 GBP
Retailer 10£507 GBP
Retailer 3£573 GBP
Retailer 4£576 GBP
Retailer 9£617 GBP
The Diamond Guys£621 GBP
Retailer 1£642 GBP
Retailer 5£651 GBP
Retailer 8£708 GBP
Retailer 6£751 GBP

53 data points across 12 retailers

1 retailer

B
The Diamond Guys
1955278548 · Nov 2
£621 GBP
$833 USD
View

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
0.49ct Marquise
£621 GBP