CaratHunter
Plans
Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 6551072778

Certificate GIA 6551072778

Diamond specifications and retailer prices

From £4,306 GBP
$5,779 USD
As of November 2, 2026
Save £3,795 GBP (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £8,101 GBP at NZ Jewellers · As of November 3, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551072778. Listed at 9 retailers as of November 2, 2026, with prices from £4,306 to £8,101, a £3,795 spread on the same certified stone. NZ Jewellers lists it at £8,101. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.64°
Pavilion angle36.79°
OriginNatural
Grading LabGIA
CertificateGIA 6551072778
Dimensions10.74 × 6.04 × 3.69 mm
L/W Ratio1.78
Girdle conditionExtremely Thick
Key to symbols
Crystal, Feather, Needle
Top View
10.74 mm6.04 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551072778
Side View
Table 66.0%Crown 43.64°Girdle: VTK-ETKPavilion 36.79°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £8,101 GBP|Low: £3,838 GBP|High: £8,101 GBP|Avg: £4,775 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 10£3,838 GBP
Retailer 3£4,256 GBP
Retailer 8£4,306 GBP
Retailer 7£4,501 GBP
Retailer 5£4,660 GBP
Retailer 11£4,790 GBP
Retailer 2£4,843 GBP
Retailer 4£4,843 GBP
Retailer 9£5,032 GBP
Retailer 6£7,136 GBP
NZ Jewellers£8,101 GBP

25 data points across 11 retailers

9 retailers£4,306 GBP to £8,101 GBP

Retailer 1
-
£3,838 GBP
$5,150 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
£4,306 GBP
$5,779 USD
View
B+
Retailer 3
-
£4,501 GBP
$6,040 USD
View
B
Retailer 4
-
£4,660 GBP
View
Retailer 5
-
£4,790 GBP
$6,428 USD
View
Price last confirmed 12 days ago
B
Retailer 6
-
£4,843 GBP
$6,499 USD
View
B
Retailer 7
-
£4,843 GBP
$6,499 USD
View
B
Retailer 8
-
£7,136 GBP
View
Most Expensive
C
NZ Jewellers
2407ea43-4c1f-4f6d-9801-e51b2a8c0951 · Nov 3
£8,101 GBP
$10,871 USD
View
8 more retailers have this diamond
Prices start from £4,306 GBPSave up to £3,795 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
£4,306 GBP