CaratHunter
Plans
Marquise|Natural|GIA

1.70ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 1557561162

Certificate GIA 1557561162

Diamond specifications and retailer prices

From £9,459 GBP
CA$17,630 CAD
As of November 2, 2026
Save £2,204 GBP (19%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £11,664 GBP at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 1.7ct natural marquise diamond

This 1.7ct natural marquise sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1557561162. Listed at 3 retailers as of November 1, 2026, with prices from £9,459 to £11,664, a £2,204 spread on the same certified stone. 77 Diamonds lists it at £11,664. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.17°
Pavilion angle41.22°
OriginNatural
Grading LabGIA
CertificateGIA 1557561162
Dimensions11.05 × 6.05 × 4.08 mm
L/W Ratio1.83
Culet sizeNone
Top View
11.05 mm6.05 mm1.70 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1557561162
Side View
Table 63.0%Crown 43.17°Girdle: THK-VTKPavilion 41.22°Culet: NoneDepth 67.5%

Caratlytics Score

How it works →
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: £11,664 GBP|Low: £6,659 GBP|High: £11,740 GBP|Avg: £8,437 GBP|+0.7%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3£6,659 GBP
Retailer 5£6,990 GBP
Retailer 6£7,361 GBP
Retailer 4£8,500 GBP
Retailer 2£9,459 GBP
77 Diamonds£11,664 GBP

36 data points across 6 retailers

3 retailers£9,459 GBP to £11,664 GBP

B
Cheapest Retailer
-
£9,459 GBP
CA$17,630 CAD
B
Retailer 2
-
£9,533 GBP
A$19,682 AUD
View
Most Expensive
C
77 Diamonds
MQMBYSWAQEAA · Nov 1
£11,664 GBP
View
2 more retailers have this diamond
Prices start from £9,459 GBPSave up to £2,204 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
£9,459 GBP