Marquise|Natural|GIA

1.51ct J SI2 Marquise Natural Diamond

VG • J/SI2 • GIA 6551273823

Certificate GIA 6551273823

Diamond specifications and retailer prices

From £4,744 GBP
$6,366 USD
As of November 1, 2026
Save £5,298 GBP (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £10,042 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551273823. Listed at 17 retailers as of October 30, 2026, with prices from £4,744 to £10,042, a £5,298 spread on the same certified stone. NZ Jewellers lists it at £10,042. 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.93°
Pavilion angle38.64°
OriginNatural
Grading LabGIA
CertificateGIA 6551273823
Dimensions11.17 × 5.90 × 3.71 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.17 mm5.90 mm1.51 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551273823
Side View
Table 56.0%Crown 43.93°Girdle: THK-VTKPavilion 38.64°Culet: NoneDepth 62.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £10,042 GBP|Low: £3,035 GBP|High: £10,042 GBP|Avg: £5,494 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 11£3,035 GBP
Retailer 8£4,711 GBP
Retailer 5£4,744 GBP
Retailer 19£4,780 GBP
Retailer 3£5,063 GBP
Retailer 16£5,439 GBP
Retailer 2£5,523 GBP
Retailer 14£5,616 GBP
Retailer 17£5,625 GBP
Retailer 12£5,936 GBP
Retailer 4£6,014 GBP
Retailer 6£6,014 GBP
Retailer 13£6,202 GBP
Retailer 9£6,207 GBP
Retailer 7£6,215 GBP
Retailer 18£6,276 GBP
Retailer 10£6,767 GBP
Retailer 15£8,368 GBP
NZ Jewellers£10,042 GBP

32 data points across 19 retailers

17 retailers£4,744 GBP to £10,042 GBP

Retailer 1
-
£4,711 GBP
$6,322 USD
Price last confirmed 17 days ago
B+
Retailer 2
-
£4,744 GBP
$6,366 USD
View
B+
Retailer 3
-
£4,780 GBP
$6,415 USD
View
B
Retailer 4
-
£5,063 GBP
$6,794 USD
View
B
Retailer 5
-
£5,439 GBP
$7,299 USD
View
B
Retailer 6
-
£5,523 GBP
$7,412 USD
View
B
Retailer 7
-
£5,616 GBP
View
B
Retailer 8
-
£5,625 GBP
$7,548 USD
View
B
Retailer 9
-
£5,936 GBP
View
B
Retailer 10
-
£6,014 GBP
$8,070 USD
View
B
Retailer 11
-
£6,014 GBP
$8,070 USD
View
B
Retailer 12
-
£6,202 GBP
€7,927 EUR
View
Retailer 13
-
£6,207 GBP
$8,330 USD
View
Price last confirmed 18 days ago
B
Retailer 14
-
£6,215 GBP
$8,340 USD
View
B
Retailer 15
-
£6,276 GBP
$8,422 USD
View
C
Retailer 16
-
£8,368 GBP
View
Most Expensive
C
NZ Jewellers
ce38172b-199e-4ed4-8056-76e04dfe03f4 · Oct 30
£10,042 GBP
$13,476 USD
View
16 more retailers have this diamond
Prices start from £4,744 GBPSave up to £5,298 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
£4,744 GBP