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Marquise|Natural|GIA

1.51ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 6542470783

Certificate GIA 6542470783

Diamond specifications and retailer prices

From £6,832 GBP
$9,154 USD
As of October 28, 2026
Save £5,441 GBP (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £12,273 GBP at NZ Jewellers · As of October 27, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542470783. Listed at 14 retailers as of October 27, 2026, with prices from £6,832 to £12,273, a £5,441 spread on the same certified stone. NZ Jewellers lists it at £12,273. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 6542470783
Dimensions11.78 × 5.93 × 3.70 mm
L/W Ratio1.99
Top View
11.78 mm5.93 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542470783
Side View
Table 59.0%CrownGirdle: STK-VTKPavilion 39.8°Culet: NoneDepth 62.4%

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: £12,273 GBP|Low: £6,793 GBP|High: £12,273 GBP|Avg: £8,595 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
October 29, 2026
Retailer 3£6,793 GBP
Retailer 13£6,832 GBP
Retailer 5£7,088 GBP
Retailer 12£7,363 GBP
Retailer 4£7,425 GBP
Retailer 11£7,978 GBP
Retailer 2£8,064 GBP
Retailer 10£8,100 GBP
Retailer 7£8,497 GBP
Retailer 9£8,669 GBP
Retailer 14£9,204 GBP
Retailer 6£9,246 GBP
Retailer 15£9,689 GBP
Retailer 8£11,562 GBP
NZ Jewellers£12,273 GBP

39 data points across 15 retailers

14 retailers£6,832 GBP to £12,273 GBP

B+
Cheapest Retailer
-
£6,832 GBP
$9,154 USD
B
Retailer 2
-
£7,088 GBP
CA$13,191 CAD
View
Retailer 3
-
£7,363 GBP
$9,866 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£7,425 GBP
$9,949 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£7,978 GBP
$10,689 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£8,064 GBP
View
Retailer 7
-
£8,100 GBP
$10,853 USD
View
Price last confirmed 7 days ago
B
Retailer 8
-
£8,497 GBP
$11,385 USD
View
B
Retailer 9
-
£8,669 GBP
€11,063 EUR
View
B
Retailer 10
-
£9,204 GBP
$12,333 USD
View
B
Retailer 11
-
£9,246 GBP
$12,389 USD
View
Retailer 12
-
£9,689 GBP
$12,982 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
£11,562 GBP
View
Most Expensive
B
NZ Jewellers
240641f6-00a5-4299-b027-002ec89afdb8 · Oct 27
£12,273 GBP
$16,444 USD
View
13 more retailers have this diamond
Prices start from £6,832 GBPSave up to £5,441 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
£6,832 GBP