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Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

J/SI1 • GIA 6565473810

Certificate GIA 6565473810

Diamond specifications and retailer prices

From £3,844 GBP
HK$40,300 HKD
As of October 28, 2026
Save £2,449 GBP (39%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £7,624 GBP at MOH London · As of October 26, 2026
View at MOH London

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) and certified by GIA 6565473810. Listed at 7 retailers as of October 27, 2026, with a 64% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565473810
Dimensions11.04 × 6.00 × 3.87 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural
Top View
11.04 mm6.00 mm1.51 ctJ / SI1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565473810
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: 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: Oct 28
Current: £7,624 GBP|Low: £3,844 GBP|High: £7,706 GBP|Avg: £5,211 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 27, 2026
Retailer 6£3,844 GBP
Retailer 4£4,538 GBP
Retailer 3£4,721 GBP
Retailer 5£4,770 GBP
Retailer 7£5,287 GBP
Retailer 2£6,293 GBP
MOH London£7,624 GBP

15 data points across 7 retailers

7 retailers£3,844 GBP to £6,293 GBP

B+
Cheapest Retailer
-
£3,844 GBP
HK$40,300 HKD
B+
Retailer 2
-
£4,538 GBP
SGD 8,230 SGD
View
Retailer 3
-
£4,721 GBP
$6,335 USD
View
Price last confirmed 6 days ago
Retailer 4
-
£4,771 GBP
$6,402 USD
View
Price last confirmed 17 days ago
Retailer 5
-
£5,287 GBP
$7,095 USD
View
Price last confirmed 8 days ago
B
Retailer 6
-
£6,293 GBP
ZAR 136,430 ZAR
View
Most Expensive
MOH London
0FEFB6260 · Oct 26
£7,624 GBP
View
Price last confirmed 7 days ago
6 more retailers have this diamond
Prices start from £3,844 GBPSave up to £2,449 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
£3,844 GBP