Marquise|Natural|GIA

1.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 7558706544

Certificate GIA 7558706544

Diamond specifications and retailer prices

From £6,039 GBP
$8,104 USD
As of November 2, 2026
Save £5,510 GBP (48%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £11,549 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7558706544. Listed at 23 retailers as of October 30, 2026, with prices from £6,039 to £11,549, a £5,510 spread on the same certified stone. NZ Jewellers lists it at £11,549. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle39.32°
Pavilion angle41.54°
OriginNatural
Grading LabGIA
CertificateGIA 7558706544
Dimensions11.37 × 6.01 × 3.77 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.37 mm6.01 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7558706544
Side View
Table 61.0%Crown 39.32°Girdle: MED-THKPavilion 41.54°Culet: NoneDepth 62.8%

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 2
Current: £11,549 GBP|Low: £5,977 GBP|High: £11,549 GBP|Avg: £8,076 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
November 2, 2026
Retailer 3£6,039 GBP
Retailer 6£6,693 GBP
Retailer 5£6,867 GBP
Retailer 14£6,930 GBP
Retailer 16£6,930 GBP
Retailer 4£7,507 GBP
Retailer 9£7,520 GBP
Retailer 12£7,621 GBP
Retailer 15£7,623 GBP
Retailer 8£7,710 GBP
Retailer 13£7,712 GBP
Retailer 7£8,152 GBP
Retailer 2£8,728 GBP
Retailer 11£10,180 GBP
Retailer 10£10,822 GBP
NZ Jewellers£11,549 GBP

44 data points across 16 retailers

23 retailers£6,039 GBP to £11,549 GBP

B+
Cheapest Retailer
-
£6,039 GBP
$8,104 USD
B+
Retailer 2
-
£6,488 GBP
$8,707 USD
View
B
Retailer 3
-
£6,693 GBP
$8,981 USD
View
B
Retailer 4
-
£6,867 GBP
$9,215 USD
View
B
Retailer 5
-
£6,930 GBP
$9,299 USD
View
B
Retailer 6
-
£6,930 GBP
$9,299 USD
View
Final sale: no returns
B
Retailer 7
-
£6,988 GBP
$9,377 USD
View
B
Retailer 8
-
£7,507 GBP
$10,074 USD
View
B+
Retailer 9
-
£7,520 GBP
View
Retailer 10
-
£7,621 GBP
A$15,733 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
£7,623 GBP
$10,229 USD
View
Retailer 12
-
£7,710 GBP
$10,346 USD
View
Price last confirmed 11 days ago
Retailer 13
-
£7,712 GBP
$10,349 USD
View
Price last confirmed 12 days ago
Retailer 14
-
£8,152 GBP
$10,940 USD
View
Price last confirmed 11 days ago
Retailer 15
-
£8,152 GBP
$10,940 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
£8,208 GBP
$11,014 USD
View
B
Retailer 17
-
£8,268 GBP
$11,096 USD
View
Retailer 18
-
£8,428 GBP
$11,310 USD
View
Price last confirmed 12 days ago
B
Retailer 19
-
£8,662 GBP
$11,624 USD
View
B
Retailer 20
-
£8,728 GBP
€11,155 EUR
View
B
Retailer 21
-
£10,180 GBP
ZAR 220,698 ZAR
View
B
Retailer 22
-
£10,822 GBP
View
Most Expensive
B
NZ Jewellers
516e55f6-e4ab-4615-9d7f-69bdbc8f4a91 · Oct 30
£11,549 GBP
$15,498 USD
View
22 more retailers have this diamond
Prices start from £6,039 GBPSave up to £5,510 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+
1.50ct Marquise
£6,039 GBP