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Marquise|Natural|GIA

1.51ct G SI2 Marquise Natural Diamond

ID • G/SI2 • GIA 5543750984

Certificate GIA 5543750984

Diamond specifications and retailer prices

From £5,382 GBP
$7,211 USD
As of October 28, 2026
Save £6,604 GBP (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £11,986 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 G 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 5543750984. Listed at 15 retailers as of October 28, 2026, with prices from £5,382 to £11,986, a £6,604 spread on the same certified stone. NZ Jewellers lists it at £11,986. 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
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle38.2°
Pavilion angle40.48°
OriginNatural
Grading LabGIA
CertificateGIA 5543750984
Dimensions11.32 × 5.99 × 3.81 mm
L/W Ratio1.89
Top View
11.32 mm5.99 mm1.51 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5543750984
Side View
Table 58.0%Crown 38.2°Girdle: ThickPavilion 40.48°Culet: NoneDepth 63.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £11,986 GBP|Low: £5,382 GBP|High: £11,986 GBP|Avg: £7,258 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
November 2, 2026
Retailer 5£5,382 GBP
Retailer 4£5,867 GBP
Retailer 13£5,947 GBP
Retailer 15£6,236 GBP
Retailer 10£6,701 GBP
Retailer 8£6,710 GBP
Retailer 12£6,715 GBP
Retailer 16£6,754 GBP
Retailer 17£6,955 GBP
Retailer 7£7,172 GBP
Retailer 14£7,172 GBP
Retailer 3£7,334 GBP
Retailer 6£7,411 GBP
Retailer 9£7,465 GBP
Retailer 2£7,510 GBP
Retailer 11£9,987 GBP
NZ Jewellers£11,986 GBP

20 data points across 17 retailers

15 retailers£5,382 GBP to £11,986 GBP

A
Cheapest Retailer
-
£5,382 GBP
$7,211 USD
A
Retailer 2
-
£5,867 GBP
$7,861 USD
View
A
Retailer 3
-
£5,947 GBP
CA$11,067 CAD
View
B+
Retailer 4
-
£6,236 GBP
$8,355 USD
View
B+
Retailer 5
-
£6,701 GBP
View
B+
Retailer 6
-
£6,715 GBP
$8,997 USD
View
B+
Retailer 7
-
£6,754 GBP
$9,049 USD
View
B+
Retailer 8
-
£6,955 GBP
$9,319 USD
View
B+
Retailer 9
-
£7,172 GBP
$9,610 USD
View
B+
Retailer 10
-
£7,172 GBP
$9,610 USD
View
B+
Retailer 11
-
£7,334 GBP
$9,826 USD
View
B+
Retailer 12
-
£7,411 GBP
$9,930 USD
View
B+
Retailer 13
-
£7,510 GBP
€9,584 EUR
View
B
Retailer 14
-
£9,987 GBP
View
Most Expensive
B
NZ Jewellers
c063fcbe-496c-47bf-aed7-fbff7226c26f · Oct 30
£11,986 GBP
$16,060 USD
View
14 more retailers have this diamond
Prices start from £5,382 GBPSave up to £6,604 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.

A
1.51ct Marquise
£5,382 GBP