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Marquise|Natural|GIA

1.51ct E SI2 Marquise Natural Diamond

VG • E/SI2 • GIA 6551478297

Certificate GIA 6551478297

Diamond specifications and retailer prices

From £5,795 GBP
$7,765 USD
As of October 30, 2026
Save £5,322 GBP (48%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £11,117 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551478297. Listed at 7 retailers as of October 30, 2026, with prices from £5,795 to £11,117, a £5,322 spread on the same certified stone. NZ Jewellers lists it at £11,117. 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
E
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.89°
Pavilion angle39.38°
OriginNatural
Grading LabGIA
CertificateGIA 6551478297
Dimensions10.88 × 6.12 × 3.71 mm
L/W Ratio1.78
Girdle conditionExtremely Thick
Key to symbols
Feather, Crystal, Cavity, Needle
Top View
10.88 mm6.12 mm1.51 ctE / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551478297
Side View
Table 66.0%Crown 35.89°Girdle: VTK-ETKPavilion 39.38°Culet: NoneDepth 60.6%

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: Oct 30
Current: £11,117 GBP|Low: £5,795 GBP|High: £11,178 GBP|Avg: £7,308 GBP|-0.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 6£5,795 GBP
Retailer 7£5,844 GBP
Retailer 2£6,282 GBP
Retailer 4£6,647 GBP
Retailer 3£6,749 GBP
Retailer 5£9,313 GBP
NZ Jewellers£11,117 GBP

19 data points across 7 retailers

7 retailers£5,795 GBP to £11,117 GBP

A
Cheapest Retailer
-
£5,795 GBP
$7,765 USD
A
Retailer 2
-
£5,844 GBP
$7,830 USD
View
A
Retailer 3
-
£6,282 GBP
View
A
Retailer 4
-
£6,647 GBP
$8,906 USD
View
A
Retailer 5
-
£6,749 GBP
$9,043 USD
View
B
Retailer 6
-
£9,313 GBP
View
Most Expensive
B
NZ Jewellers
a75fa58f-1818-4df9-bf64-a4d62544547a · Oct 30
£11,117 GBP
$14,896 USD
View
6 more retailers have this diamond
Prices start from £5,795 GBPSave up to £5,322 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
£5,795 GBP