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Marquise|Natural|GIA

1.70ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 3555196465

Certificate GIA 3555196465

Diamond specifications and retailer prices

From $17,234 AUD
CA$16,775 CAD
As of October 30, 2026
Save $3,844 AUD (18%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $21,078 AUD 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 3555196465. Listed at 3 retailers as of October 30, 2026, with prices from $17,234 to $21,078, a $3,844 spread on the same certified stone. 77 Diamonds lists it at $21,078. 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 angle41.94°
Pavilion angle40.01°
OriginNatural
Grading LabGIA
CertificateGIA 3555196465
Dimensions11.09 × 6.09 × 4.07 mm
L/W Ratio1.82
Top View
11.09 mm6.09 mm1.70 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555196465
Side View
Table 55.0%Crown 41.94°Girdle: MED-ETKPavilion 40.01°Culet: NoneDepth 66.7%

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: Oct 30
Current: $21,078 AUD|Low: $11,312 AUD|High: $25,138 AUD|Avg: $17,258 AUD|-0.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 9$11,312 AUD
Retailer 7$13,860 AUD
Retailer 4$14,546 AUD
Retailer 5$15,322 AUD
Retailer 3$16,663 AUD
Retailer 2$17,234 AUD
Retailer 8$17,873 AUD
Retailer 6$19,400 AUD
77 Diamonds$21,078 AUD
Retailer 10$25,138 AUD

33 data points across 10 retailers

3 retailers$17,234 AUD to $21,078 AUD

B
Cheapest Retailer
-
$17,234 AUD
CA$16,775 CAD
B
Retailer 2
-
$17,368 AUD
View
Most Expensive
B
77 Diamonds
MQMBJJQM2UFT · Nov 1
$21,078 AUD
£11,631 GBP
View
2 more retailers have this diamond
Prices start from $17,234 AUDSave up to $3,844 AUD

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
$17,234 AUD