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Marquise|Natural|GIA

1.51ct E SI2 Marquise Natural Diamond

VG • E/SI2 • GIA 1555020554

Certificate GIA 1555020554

Diamond specifications and retailer prices

From £5,095 GBP
SGD 9,225 SGD
As of October 31, 2026
Save £1,419 GBP (22%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £6,513 GBP at Diamond Exchange Canada · As of October 30, 2026
View at Diamond Exchange Canada

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 1555020554. Listed at 8 retailers as of October 30, 2026, with prices from £5,095 to £6,513, a £1,419 spread on the same certified stone. Diamond Exchange Canada lists it at £6,513. 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
SymmetryExcellent
FluorescenceStrong
Crown angle35.23°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 1555020554
Dimensions11.51 × 6.12 × 3.55 mm
L/W Ratio1.88
Culet sizeNone
Top View
11.51 mm6.12 mm1.51 ctE / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1555020554
Side View
Table 60.0%Crown 35.23°Girdle: THN-THKPavilion 39.78°Culet: NoneDepth 57.9%

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 31
Current: £6,513 GBP|Low: £4,076 GBP|High: £6,745 GBP|Avg: £5,738 GBP
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 10£4,076 GBP
Retailer 6£5,095 GBP
Retailer 7£5,197 GBP
Retailer 2£5,391 GBP
Retailer 9£5,630 GBP
Retailer 5£5,797 GBP
Retailer 4£6,011 GBP
Retailer 3£6,099 GBP
Retailer 8£6,366 GBP
Retailer 11£6,377 GBP
Diamond Exchange Canada£6,513 GBP

24 data points across 11 retailers

8 retailers£5,095 GBP to £6,513 GBP

A
Cheapest Retailer
-
£5,095 GBP
SGD 9,225 SGD
A
Retailer 2
-
£5,197 GBP
SGD 9,410 SGD
View
A
Retailer 3
-
£5,391 GBP
$7,224 USD
View
A
Retailer 4
-
£5,797 GBP
$7,767 USD
View
A
Retailer 5
-
£6,011 GBP
$8,054 USD
View
A
Retailer 6
-
£6,366 GBP
$8,529 USD
View
B+
Retailer 7
-
£6,377 GBP
$8,545 USD
View
Most Expensive
B+
Diamond Exchange Canada
1989721906 · Oct 30
£6,513 GBP
CA$12,121 CAD
View
7 more retailers have this diamond
Prices start from £5,095 GBPSave up to £1,419 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
£5,095 GBP