Marquise|Natural|GIA

1.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1559720724

Certificate GIA 1559720724

Diamond specifications and retailer prices

From £6,498 GBP
$8,720 USD
As of November 1, 2026
Save £5,428 GBP (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £11,926 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 G 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 1559720724. Listed at 15 retailers as of October 30, 2026, with prices from £6,498 to £11,926, a £5,428 spread on the same certified stone. NZ Jewellers lists it at £11,926. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559720724
Dimensions11.28 × 5.93 × 3.72 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.28 mm5.93 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559720724
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.8%

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: Nov 1
Current: £7,834 GBP|Low: £6,567 GBP|High: £11,236 GBP|Avg: £8,383 GBP|+0.6%
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
November 3, 2026
Retailer 12£6,640 GBP
Retailer 13£6,701 GBP
Retailer 11£7,087 GBP
Retailer 14£7,741 GBP
Retailer 2£7,754 GBP
Retailer 1£7,834 GBP
Retailer 7£7,871 GBP
Retailer 4£8,197 GBP
Retailer 6£8,197 GBP
Retailer 5£8,473 GBP
Retailer 8£8,594 GBP
Retailer 3£9,356 GBP
Retailer 10£10,512 GBP
Retailer 9£11,175 GBP

15 data points across 14 retailers

15 retailers£6,498 GBP to £11,926 GBP

B+
Cheapest Retailer
-
£6,498 GBP
$8,720 USD
B+
Retailer 2
-
£6,640 GBP
$8,910 USD
View
B+
Retailer 3
-
£6,701 GBP
$8,992 USD
View
B+
Retailer 4
-
£7,087 GBP
$9,510 USD
View
B+
Retailer 5
-
£7,754 GBP
$10,406 USD
View
B+
Retailer 6
-
£7,834 GBP
View
B+
Retailer 7
-
£7,871 GBP
$10,563 USD
View
B
Retailer 8
-
£8,197 GBP
$11,000 USD
View
B
Retailer 9
-
£8,197 GBP
$11,000 USD
View
B+
Retailer 10
-
£8,473 GBP
$11,370 USD
View
B+
Retailer 11
-
£8,594 GBP
€10,984 EUR
View
B
Retailer 12
-
£8,945 GBP
$12,003 USD
View
B
Retailer 13
-
£10,512 GBP
ZAR 227,899 ZAR
View
B
Retailer 14
-
£11,175 GBP
View
Most Expensive
B
NZ Jewellers
24a3d514-e6c5-44a4-93f6-2286ae657d6d · Oct 30
£11,926 GBP
$16,004 USD
View
14 more retailers have this diamond
Prices start from £6,498 GBPSave up to £5,428 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
£6,498 GBP