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Marquise|Natural|GIA

1.51ct I IF Marquise Natural Diamond

EX • I/IF • GIA 7551189864

Certificate GIA 7551189864

Diamond specifications and retailer prices

From £6,159 GBP
As of October 30, 2026
Save £4,881 GBP (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £11,041 GBP at With Clarity · As of October 30, 2026
View at With Clarity

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551189864. Listed at 16 retailers as of October 30, 2026, with prices from £6,159 to £11,041, a £4,881 spread on the same certified stone. With Clarity lists it at £11,041. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.46°
Pavilion angle39.84°
OriginNatural
Grading LabGIA
CertificateGIA 7551189864
Dimensions11.17 × 5.90 × 3.77 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.17 mm5.90 mm1.51 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551189864
Side View
Table 60.0%Crown 39.46°Girdle: STK-THKPavilion 39.84°Culet: NoneDepth 63.8%

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 30
Current: £6,705 GBP|Low: £6,159 GBP|High: £11,496 GBP|Avg: £8,077 GBP|-5.3%
Retailer 1
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
With Clarity
November 5, 2026
Retailer 13£6,159 GBP
Retailer 15£6,519 GBP
Retailer 10£6,598 GBP
Retailer 1£6,705 GBP
Retailer 12£6,779 GBP
Retailer 2£6,810 GBP
Retailer 8£6,880 GBP
Retailer 14£7,722 GBP
Retailer 9£7,844 GBP
Retailer 4£7,888 GBP
Retailer 3£7,964 GBP
Retailer 6£8,159 GBP
Retailer 11£9,082 GBP
Retailer 7£9,342 GBP
Retailer 5£9,681 GBP
With Clarity£11,041 GBP

21 data points across 16 retailers

16 retailers£6,159 GBP to £11,041 GBP

A
Cheapest Retailer
-
£6,159 GBP
A
Retailer 2
-
£6,519 GBP
View
A
Retailer 3
-
£6,598 GBP
View
A
Retailer 4
-
£6,705 GBP
View
A
Retailer 5
-
£6,779 GBP
View
A
Retailer 6
-
£6,810 GBP
View
A
Retailer 7
-
£6,880 GBP
View
A
Retailer 8
-
£7,722 GBP
View
B+
Retailer 9
-
£7,844 GBP
View
B+
Retailer 10
-
£7,888 GBP
View
B+
Retailer 11
-
£7,964 GBP
View
Retailer 12
-
£8,159 GBP
View
Price last confirmed 10 days ago
B+
Retailer 13
-
£9,063 GBP
View
B+
Retailer 14
-
£9,082 GBP
View
B+
Retailer 15
-
£9,681 GBP
View
Most Expensive
B
With Clarity
7551189864 · Oct 30
£11,041 GBP
$14,860 USD
View
15 more retailers have this diamond
Prices start from £6,159 GBPSave up to £4,881 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
£6,159 GBP