Marquise|Natural|GIA

1.70ct F SI2 Marquise Natural Diamond

ID • F/SI2 • GIA 3555551182

Certificate GIA 3555551182

Diamond specifications and retailer prices

From £8,338 GBP
CA$15,540 CAD
As of November 2, 2026
Save £1,826 GBP (18%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £13,683 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.7ct natural marquise diamond

This 1.7ct natural marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555551182. Listed at 16 retailers as of November 2, 2026, with a relatively tight 22% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.70
Carat
F
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3555551182
Dimensions12.08 × 6.34 × 3.71 mm
L/W Ratio1.91
Culet sizeNone
Top View
12.08 mm6.34 mm1.70 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 3555551182
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.5%

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: Nov 2
Current: £13,683 GBP|Low: £7,418 GBP|High: £13,683 GBP|Avg: £9,746 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
Retailer 18
October 20, 2026
Retailer 13£7,418 GBP
Retailer 9£7,548 GBP
Retailer 6£7,617 GBP
Retailer 5£8,210 GBP
Retailer 8£8,278 GBP
Retailer 18£8,338 GBP
Retailer 14£8,894 GBP
Retailer 17£9,031 GBP
Retailer 11£9,081 GBP
Retailer 2£9,302 GBP
Retailer 3£9,463 GBP
Retailer 7£10,111 GBP
Retailer 4£10,164 GBP
Retailer 12£10,263 GBP
Retailer 15£10,267 GBP
Retailer 10£10,799 GBP
Retailer 16£12,891 GBP
NZ Jewellers£13,683 GBP

23 data points across 18 retailers

16 retailers£8,338 GBP to £10,164 GBP

Retailer 1
-
£7,418 GBP
$9,955 USD
Price last confirmed 15 days ago
Retailer 2
-
£7,548 GBP
$10,129 USD
View
Price last confirmed 14 days ago
Retailer 3
-
£7,617 GBP
$10,222 USD
View
Price last confirmed 13 days ago
Retailer 4
-
£8,210 GBP
$11,017 USD
View
Price last confirmed 22 days ago
Retailer 5
-
£8,278 GBP
$11,109 USD
View
Price last confirmed 15 days ago
B+
Retailer 6
-
£8,338 GBP
CA$15,540 CAD
View
Retailer 7
-
£8,894 GBP
$11,935 USD
View
Price last confirmed 15 days ago
Retailer 8
-
£9,031 GBP
$12,119 USD
View
Price last confirmed 17 days ago
Retailer 9
-
£9,081 GBP
View
Price last confirmed 14 days ago
B
Retailer 10
-
£9,463 GBP
$12,699 USD
View
Retailer 11
-
£10,111 GBP
$13,568 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
£10,164 GBP
$13,639 USD
View
Retailer 13
-
£10,263 GBP
$13,772 USD
View
Price last confirmed 15 days ago
Retailer 14
-
£10,799 GBP
$14,492 USD
View
Price last confirmed 19 days ago
Retailer 15
-
£12,891 GBP
View
Price last confirmed 15 days ago
Most Expensive
NZ Jewellers
d17e5db4-c94f-4f59-b6f4-d6d4ce22d2a8 · Oct 17
£13,683 GBP
$18,362 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from £8,338 GBPSave up to £1,826 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+
1.70ct Marquise
£8,338 GBP