Marquise|Natural|GIA

1.56ct G SI2 Marquise Natural Diamond

ID • G/SI2 • GIA 1545751022

Certificate GIA 1545751022

Diamond specifications and retailer prices

From £5,121 GBP
$6,861 USD
As of October 27, 2026
Save £6,298 GBP (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £12,214 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.56ct natural marquise diamond

This 1.56ct 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 1545751022. Listed at 16 retailers as of October 27, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.56
Carat
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle39.56°
Pavilion angle40.13°
OriginNatural
Grading LabGIA
CertificateGIA 1545751022
Dimensions11.07 × 5.99 × 3.85 mm
L/W Ratio1.85
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
11.07 mm5.99 mm1.56 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1545751022
Side View
Table 58.0%Crown 39.56°Girdle: ThickPavilion 40.13°Culet: NoneDepth 64.3%

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 27
Current: £6,618 GBP|Low: £5,121 GBP|High: £10,300 GBP|Avg: £6,803 GBP|-6.7%
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
October 28, 2026
Retailer 4£5,121 GBP
Retailer 5£5,594 GBP
Retailer 9£5,659 GBP
Retailer 3£5,933 GBP
Retailer 11£6,389 GBP
Retailer 6£6,393 GBP
Retailer 1£6,618 GBP
Retailer 2£6,851 GBP
Retailer 12£6,851 GBP
Retailer 10£6,978 GBP
Retailer 13£7,083 GBP
Retailer 8£7,125 GBP
Retailer 7£9,528 GBP

28 data points across 13 retailers

16 retailers£5,121 GBP to £11,419 GBP

A
Cheapest Retailer
-
£5,121 GBP
$6,861 USD
A
Retailer 2
-
£5,594 GBP
$7,495 USD
View
Retailer 3
-
£5,659 GBP
CA$10,531 CAD
View
Price last confirmed 10 days ago
A
Retailer 4
-
£5,933 GBP
$7,950 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£6,389 GBP
$8,561 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
£6,393 GBP
View
B+
Retailer 7
-
£6,618 GBP
$8,867 USD
View
B+
Retailer 8
-
£6,851 GBP
$9,180 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£6,851 GBP
$9,180 USD
View
Retailer 10
-
£6,978 GBP
$9,350 USD
View
Price last confirmed 9 days ago
Retailer 11
-
£7,083 GBP
$9,490 USD
View
Price last confirmed 7 days ago
Retailer 12
-
£7,125 GBP
€9,092 EUR
View
Price last confirmed 8 days ago
B
Retailer 13
-
£9,528 GBP
View
B
Retailer 14
-
£11,419 GBP
$15,300 USD
View
Retailer 15
-
£11,419 GBP
$15,300 USD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
3ef8db69-834c-4538-a502-b274dd11eb14 · Sep 28
£12,214 GBP
$16,366 USD
View
Price last confirmed 35 days ago
15 more retailers have this diamond
Prices start from £5,121 GBPSave up to £6,298 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
1.56ct Marquise
£5,121 GBP