Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 3555701460

Certificate GIA 3555701460

Diamond specifications and retailer prices

From £5,160 GBP
CA$9,618 CAD
As of October 27, 2026
Save £5,215 GBP (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £10,375 GBP at NZ Jewellers · As of October 27, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3555701460. Listed at 17 retailers as of October 27, 2026, with prices from £5,160 to £10,375, a £5,215 spread on the same certified stone. NZ Jewellers lists it at £10,375. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3555701460
Dimensions10.84 × 5.93 × 3.98 mm
L/W Ratio1.83
Culet sizeNone
Top View
10.84 mm5.93 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3555701460
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.2%

Caratlytics Score

How it works →
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: Oct 27
Current: £10,375 GBP|Low: £4,496 GBP|High: £10,375 GBP|Avg: £6,171 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£4,543 GBP
Retailer 15£4,620 GBP
Retailer 16£4,901 GBP
Retailer 9£5,160 GBP
Retailer 4£5,187 GBP
Retailer 17£5,190 GBP
Retailer 14£5,418 GBP
Retailer 6£5,619 GBP
Retailer 3£5,706 GBP
Retailer 11£5,820 GBP
Retailer 13£5,948 GBP
Retailer 7£6,485 GBP
Retailer 8£6,833 GBP
Retailer 2£7,771 GBP
Retailer 10£7,989 GBP
Retailer 12£8,657 GBP
NZ Jewellers£10,375 GBP

41 data points across 17 retailers

17 retailers£5,160 GBP to £10,375 GBP

Retailer 1
-
£4,543 GBP
$6,097 USD
Price last confirmed 7 days ago
Retailer 2
-
£4,620 GBP
$6,200 USD
View
Price last confirmed 12 days ago
Retailer 3
-
£4,901 GBP
$6,577 USD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
£5,160 GBP
CA$9,618 CAD
View
Retailer 5
-
£5,187 GBP
$6,961 USD
View
Price last confirmed 8 days ago
Retailer 6
-
£5,190 GBP
$6,965 USD
View
Price last confirmed 5 days ago
Retailer 7
-
£5,418 GBP
$7,270 USD
View
Price last confirmed 7 days ago
Retailer 8
-
£5,619 GBP
$7,541 USD
View
Price last confirmed 7 days ago
Retailer 9
-
£5,706 GBP
$7,657 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£5,820 GBP
View
Retailer 11
-
£5,948 GBP
A$12,280 AUD
View
Price last confirmed 11 days ago
B
Retailer 12
-
£6,485 GBP
$8,702 USD
View
Retailer 13
-
£6,833 GBP
$9,169 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
£7,771 GBP
€9,932 EUR
View
B
Retailer 15
-
£7,989 GBP
$10,721 USD
View
Retailer 16
-
£8,657 GBP
View
Price last confirmed 8 days ago
Most Expensive
C
NZ Jewellers
9c0ebc06-2c37-4178-9adb-c416275a27cf · Oct 27
£10,375 GBP
$13,923 USD
View
16 more retailers have this diamond
Prices start from £5,160 GBPSave up to £5,215 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+
1.51ct Marquise
£5,160 GBP