CaratHunter
Plans
Marquise|Natural|GIA

1.51ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 6531852982

Certificate GIA 6531852982

Diamond specifications and retailer prices

From £4,361 GBP
As of November 5, 2026
Save £4,871 GBP (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £9,232 GBP at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6531852982. Listed at 12 retailers as of November 5, 2026, with prices from £4,361 to £9,232, a £4,871 spread on the same certified stone. NZ Jewellers lists it at £9,232. 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
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle42.1°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6531852982
Dimensions10.85 × 5.95 × 3.84 mm
L/W Ratio1.82
Top View
10.85 mm5.95 mm1.51 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6531852982
Side View
Table 61.0%Crown 42.1°Girdle: MED-VTKPavilion 40.8°Culet: NoneDepth 64.5%

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 5
Current: £9,232 GBP|Low: £4,312 GBP|High: £9,232 GBP|Avg: £5,763 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10£4,312 GBP
Retailer 4£4,350 GBP
Retailer 11£4,616 GBP
Retailer 12£5,000 GBP
Retailer 9£5,077 GBP
Retailer 5£5,154 GBP
Retailer 8£5,275 GBP
Retailer 2£5,352 GBP
Retailer 3£5,770 GBP
Retailer 7£6,005 GBP
Retailer 6£7,672 GBP
NZ Jewellers£9,232 GBP

44 data points across 12 retailers

12 retailers£4,361 GBP to £9,232 GBP

B+
Cheapest Retailer
-
£4,361 GBP
Retailer 2
-
£4,616 GBP
View
Price last confirmed 8 days ago
B
Retailer 3
-
£4,654 GBP
View
B
Retailer 4
-
£5,000 GBP
View
B
Retailer 5
-
£5,077 GBP
View
B
Retailer 6
-
£5,154 GBP
View
B
Retailer 7
-
£5,275 GBP
View
B
Retailer 8
-
£5,352 GBP
View
B
Retailer 9
-
£5,770 GBP
View
B
Retailer 10
-
£6,005 GBP
View
C
Retailer 11
-
£7,672 GBP
View
Most Expensive
C
NZ Jewellers
7650da54-d293-4295-bcaf-0e4085a6c8ca · Nov 5
£9,232 GBP
$12,357 USD
View
11 more retailers have this diamond
Prices start from £4,361 GBPSave up to £4,871 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
£4,361 GBP