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Marquise|Natural|GIA

1.51ct F SI1 Marquise Natural Diamond

GD • F/SI1 • GIA 2556946487

Certificate GIA 2556946487

Diamond specifications and retailer prices

From £7,731 GBP
SGD 14,020 SGD
As of November 3, 2026
Save £1,815 GBP (19%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £9,546 GBP at Jared · As of November 2, 2026
View at Jared

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556946487. Listed at 8 retailers as of November 2, 2026, with prices from £7,731 to £9,546, a £1,815 spread on the same certified stone. Jared lists it at £9,546. 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

1.51
Carat
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556946487
Dimensions11.51 × 5.96 × 3.79 mm
L/W Ratio1.93
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Needle
Top View
11.51 mm5.96 mm1.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556946487
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.5%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: £9,546 GBP|Low: £7,062 GBP|High: £9,717 GBP|Avg: £8,612 GBP|-1.8%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 3£7,731 GBP
Retailer 7£7,827 GBP
Retailer 2£8,206 GBP
Retailer 4£8,315 GBP
Retailer 6£8,766 GBP
Retailer 5£9,233 GBP
Retailer 8£9,233 GBP
Jared£9,546 GBP

31 data points across 8 retailers

8 retailers£7,731 GBP to £9,546 GBP

B
Cheapest Retailer
-
£7,731 GBP
SGD 14,020 SGD
B
Retailer 2
-
£7,827 GBP
$10,504 USD
View
Final sale: no returns
B
Retailer 3
-
£8,206 GBP
View
B
Retailer 4
-
£8,315 GBP
$11,158 USD
View
B
Retailer 5
-
£8,766 GBP
$11,763 USD
View
B
Retailer 6
-
£9,233 GBP
$12,390 USD
View
B
Retailer 7
-
£9,233 GBP
$12,390 USD
View
Most Expensive
B
Jared
160009497 · Nov 2
£9,546 GBP
$12,810 USD
View
7 more retailers have this diamond
Prices start from £7,731 GBPSave up to £1,815 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
1.51ct Marquise
£7,731 GBP