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Marquise|Natural|GIA

1.70ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 1565578236

Certificate GIA 1565578236

Diamond specifications and retailer prices

From $15,446 AUD
SGD 14,628 SGD
As of November 1, 2026
Save $12,233 AUD (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $27,679 AUD at With Clarity · As of November 1, 2026
View at With Clarity

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1565578236. Listed at 15 retailers as of November 1, 2026, with prices from $15,446 to $27,679, a $12,233 spread on the same certified stone. With Clarity lists it at $27,679. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.25°
Pavilion angle36.86°
OriginNatural
Grading LabGIA
CertificateGIA 1565578236
Dimensions12.08 × 6.00 × 3.70 mm
L/W Ratio2.01
Culet sizeNone
Top View
12.08 mm6.00 mm1.70 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1565578236
Side View
Table 58.0%Crown 43.25°Girdle: MED-VTKPavilion 36.86°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $19,730 AUD|Low: $15,446 AUD|High: $27,679 AUD|Avg: $18,940 AUD|+0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
With Clarity
November 2, 2026
Retailer 7$15,446 AUD
Retailer 9$16,204 AUD
Retailer 10$16,381 AUD
Retailer 8$16,621 AUD
Retailer 11$16,762 AUD
Retailer 3$16,894 AUD
Retailer 6$16,969 AUD
Retailer 5$17,073 AUD
Retailer 4$19,578 AUD
Retailer 12$19,730 AUD
Retailer 1$19,730 AUD
Retailer 2$20,236 AUD
Retailer 13$23,892 AUD
With Clarity$27,679 AUD

19 data points across 14 retailers

15 retailers$15,446 AUD to $27,679 AUD

B+
Cheapest Retailer
-
$15,446 AUD
SGD 14,628 SGD
B+
Retailer 2
-
$16,204 AUD
$11,356 USD
View
B
Retailer 3
-
$16,381 AUD
$11,480 USD
View
B+
Retailer 4
-
$16,621 AUD
$11,648 USD
View
B
Retailer 5
-
$16,718 AUD
SGD 15,833 SGD
View
B
Retailer 6
-
$16,762 AUD
$11,747 USD
View
B
Retailer 7
-
$16,894 AUD
$11,840 USD
View
B+
Retailer 8
-
$16,969 AUD
£9,364 GBP
View
B
Retailer 9
-
$17,073 AUD
$11,965 USD
View
B
Retailer 10
-
$19,578 AUD
$13,721 USD
View
B
Retailer 11
-
$19,730 AUD
$13,827 USD
View
B
Retailer 12
-
$19,730 AUD
€13,169 EUR
View
B
Retailer 13
-
$20,236 AUD
$14,182 USD
View
B
Retailer 14
-
$23,892 AUD
$16,744 USD
View
Most Expensive
B
With Clarity
1565578236 · Nov 1
$27,679 AUD
$19,398 USD
View
14 more retailers have this diamond
Prices start from $15,446 AUDSave up to $12,233 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
$15,446 AUD