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Marquise|Natural|GIA

1.70ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 1557561162

Certificate GIA 1557561162

Diamond specifications and retailer prices

From $18,113 AUD
CA$17,630 CAD
As of November 2, 2026
Save $4,221 AUD (19%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $22,334 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 1557561162. Listed at 3 retailers as of November 1, 2026, with prices from $18,113 to $22,334, a $4,221 spread on the same certified stone. 77 Diamonds lists it at $22,334. 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

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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: $22,334 AUD|Low: $12,750 AUD|High: $22,480 AUD|Avg: $16,155 AUD|+0.7%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3$12,750 AUD
Retailer 5$13,384 AUD
Retailer 6$14,095 AUD
Retailer 4$16,275 AUD
Retailer 2$18,113 AUD
77 Diamonds$22,334 AUD

36 data points across 6 retailers

3 retailers$18,113 AUD to $22,334 AUD

B
Cheapest Retailer
-
$18,113 AUD
CA$17,630 CAD
B
Retailer 2
-
$18,255 AUD
View
Most Expensive
C
77 Diamonds
MQMBYSWAQEAA · Nov 1
$22,334 AUD
£12,324 GBP
View
2 more retailers have this diamond
Prices start from $18,113 AUDSave up to $4,221 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
$18,113 AUD