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Marquise|Natural|GIA

1.51ct F SI1 Marquise Natural Diamond

GD • F/SI1 • GIA 7556418276

Certificate GIA 7556418276

Diamond specifications and retailer prices

From £5,888 GBP
SGD 10,678 SGD
As of November 1, 2026
Save £4,665 GBP (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £10,553 GBP at With Clarity · As of November 1, 2026
View at With Clarity

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 7556418276. Listed at 13 retailers as of November 1, 2026, with prices from £5,888 to £10,553, a £4,665 spread on the same certified stone. With Clarity lists it at £10,553. 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
SymmetryExcellent
FluorescenceNone
Crown angle41.58°
Pavilion angle40.65°
OriginNatural
Grading LabGIA
CertificateGIA 7556418276
Dimensions10.66 × 5.85 × 3.95 mm
L/W Ratio1.82
Culet sizeNone
Top View
10.66 mm5.85 mm1.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556418276
Side View
Table 58.0%Crown 41.58°Girdle: STK-VTKPavilion 40.65°Culet: NoneDepth 67.5%

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 1
Current: £7,801 GBP|Low: £5,888 GBP|High: £11,212 GBP|Avg: £7,841 GBP|-3.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
With Clarity
November 2, 2026
Retailer 9£5,888 GBP
Retailer 10£6,233 GBP
Retailer 11£6,375 GBP
Retailer 8£6,480 GBP
Retailer 6£6,510 GBP
Retailer 12£6,569 GBP
Retailer 2£7,555 GBP
Retailer 7£7,570 GBP
Retailer 13£7,627 GBP
Retailer 4£7,789 GBP
Retailer 1£7,801 GBP
Retailer 5£9,112 GBP
Retailer 3£9,558 GBP
With Clarity£10,553 GBP

26 data points across 14 retailers

13 retailers£5,888 GBP to £10,553 GBP

A
Cheapest Retailer
-
£5,888 GBP
SGD 10,678 SGD
B+
Retailer 2
-
£6,233 GBP
$8,364 USD
View
B+
Retailer 3
-
£6,375 GBP
SGD 11,560 SGD
View
B+
Retailer 4
-
£6,480 GBP
$8,696 USD
View
B+
Retailer 5
-
£6,510 GBP
View
B+
Retailer 6
-
£6,569 GBP
$8,815 USD
View
B+
Retailer 7
-
£7,555 GBP
$10,139 USD
View
B+
Retailer 8
-
£7,570 GBP
$10,159 USD
View
B+
Retailer 9
-
£7,627 GBP
$10,235 USD
View
B
Retailer 10
-
£7,789 GBP
$10,453 USD
View
B
Retailer 11
-
£7,801 GBP
€9,970 EUR
View
B
Retailer 12
-
£9,558 GBP
$12,826 USD
View
Most Expensive
B
With Clarity
7556418276 · Nov 1
£10,553 GBP
$14,162 USD
View
12 more retailers have this diamond
Prices start from £5,888 GBPSave up to £4,665 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
£5,888 GBP