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Marquise|Natural|GIA

1.70ct F SI1 Marquise Natural Diamond

VG • F/SI1 • GIA 7551635158

Certificate GIA 7551635158

Diamond specifications and retailer prices

From £11,115 GBP
A$22,948 AUD
As of November 2, 2026
Save £2,937 GBP (21%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £14,375 GBP at NZ Jewellers · As of October 9, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7551635158. Listed at 7 retailers as of November 2, 2026, with a 26% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.70
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551635158
Dimensions11.55 × 6.09 × 3.97 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
11.55 mm6.09 mm1.70 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551635158
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £14,375 GBP|Low: £8,118 GBP|High: £16,018 GBP|Avg: £11,139 GBP
NZ Jewellers
Retailer 2
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Retailer 26
November 2, 2026
Retailer 26£8,118 GBP
Retailer 7£8,994 GBP
Retailer 5£9,301 GBP
Retailer 4£9,415 GBP
Retailer 14£9,436 GBP
Retailer 11£9,498 GBP
Retailer 8£9,704 GBP
Retailer 12£9,967 GBP
Retailer 10£10,834 GBP
Retailer 9£11,115 GBP
Retailer 17£11,122 GBP
Retailer 16£11,129 GBP
Retailer 20£11,169 GBP
Retailer 22£11,204 GBP
Retailer 24£11,416 GBP
Retailer 18£11,558 GBP
Retailer 19£11,558 GBP
Retailer 6£11,571 GBP
Retailer 15£11,893 GBP
Retailer 23£11,945 GBP
Retailer 25£12,033 GBP
Retailer 21£12,144 GBP
Retailer 2£13,901 GBP
Retailer 13£14,052 GBP
NZ Jewellers£14,375 GBP
Retailer 3£16,018 GBP

16 data points across 26 retailers

7 retailers£11,115 GBP to £14,052 GBP

B
Cheapest Retailer
-
£11,115 GBP
A$22,948 AUD
Retailer 2
-
£11,416 GBP
$15,319 USD
View
Price last confirmed 24 days ago
Retailer 3
-
£11,571 GBP
$15,527 USD
View
Price last confirmed 24 days ago
Retailer 4
-
£12,144 GBP
$16,297 USD
View
Price last confirmed 24 days ago
B
Retailer 5
-
£13,901 GBP
€17,766 EUR
View
B
Retailer 6
-
£14,052 GBP
$18,857 USD
View
Most Expensive
NZ Jewellers
226bdddd-29fa-4ebe-9711-30ce70275206 · Oct 9
£14,375 GBP
$19,291 USD
View
Price last confirmed 24 days ago
6 more retailers have this diamond
Prices start from £11,115 GBPSave up to £2,937 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
£11,115 GBP