CaratHunter
Plans
Marquise|Natural|GIA

1.51ct F SI2 Marquise Natural Diamond

GD • F/SI2 • GIA 1558632218

Certificate GIA 1558632218

Diamond specifications and retailer prices

From £4,545 GBP
As of November 5, 2026
Save £2,917 GBP (39%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £7,462 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1558632218. Listed at 12 retailers as of November 5, 2026, with prices from £4,545 to £7,462, a £2,917 spread on the same certified stone. Helzberg Diamonds lists it at £7,462. 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.67°
Pavilion angle39.9°
OriginNatural
Grading LabGIA
CertificateGIA 1558632218
Dimensions10.67 × 5.86 × 3.91 mm
L/W Ratio1.82
Culet sizeNone
Top View
10.67 mm5.86 mm1.51 ctF / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558632218
Side View
Table 60.0%Crown 42.67°Girdle: STK-VTKPavilion 39.9°Culet: NoneDepth 66.7%

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 5
Current: £7,462 GBP|Low: £4,545 GBP|High: £7,794 GBP|Avg: £5,551 GBP|-4.3%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6£4,545 GBP
Retailer 5£4,758 GBP
Retailer 9£4,810 GBP
Retailer 11£4,920 GBP
Retailer 4£5,009 GBP
Retailer 7£5,207 GBP
Retailer 3£5,695 GBP
Retailer 10£5,733 GBP
Retailer 2£5,765 GBP
Retailer 8£5,804 GBP
Helzberg Diamonds£7,462 GBP

41 data points across 11 retailers

12 retailers£4,545 GBP to £7,462 GBP

A
Cheapest Retailer
-
£4,545 GBP
A
Retailer 2
-
£4,758 GBP
View
A
Retailer 3
-
£4,810 GBP
View
A
Retailer 4
-
£4,920 GBP
View
A
Retailer 5
-
£5,009 GBP
View
A
Retailer 6
-
£5,207 GBP
View
B+
Retailer 7
-
£5,695 GBP
View
B+
Retailer 8
-
£5,733 GBP
View
B+
Retailer 9
-
£5,765 GBP
View
B+
Retailer 10
-
£5,804 GBP
View
B+
Retailer 11
-
£5,888 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRHLLOMJIIHO · Nov 6
£7,462 GBP
$9,988 USD
View
11 more retailers have this diamond
Prices start from £4,545 GBPSave up to £2,917 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
1.51ct Marquise
£4,545 GBP