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Marquise|Natural|GIA

1.70ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2557437761

Certificate GIA 2557437761

Diamond specifications and retailer prices

From $14,685 AUD
HK$80,400 HKD
As of October 27, 2026
Save $6,043 AUD (29%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $20,727 AUD at Reve Diamonds · As of October 29, 2026
View at Reve 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557437761. Listed at 14 retailers as of October 27, 2026, with prices from $14,685 to $20,727, a $6,043 spread on the same certified stone. Reve Diamonds lists it at $20,727. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.70
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557437761
Dimensions12.73 × 5.86 × 3.53 mm
L/W Ratio2.17
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural
Top View
12.73 mm5.86 mm1.70 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557437761
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 60.2%

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: Oct 27
Current: $26,456 AUD|Low: $14,685 AUD|High: $28,194 AUD|Avg: $20,269 AUD|-0.9%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 25, 2026
Retailer 10$14,685 AUD
Retailer 9$17,043 AUD
Retailer 4$17,117 AUD
Retailer 5$17,325 AUD
Retailer 6$17,895 AUD
Retailer 7$18,357 AUD
Retailer 16$18,409 AUD
Retailer 11$18,538 AUD
Retailer 15$18,672 AUD
Retailer 14$19,080 AUD
Retailer 18$19,918 AUD
Retailer 3$20,229 AUD
Retailer 8$20,791 AUD
Retailer 17$21,007 AUD
Retailer 12$21,223 AUD
Retailer 2$24,372 AUD
Retailer 1$26,456 AUD
Retailer 13$28,194 AUD

32 data points across 18 retailers

14 retailers$14,685 AUD to $20,727 AUD

B+
Cheapest Retailer
-
$14,685 AUD
HK$80,400 HKD
Retailer 2
-
$16,545 AUD
SGD 15,669 SGD
View
Price last confirmed 21 days ago
Retailer 3
-
$17,043 AUD
$11,944 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$17,117 AUD
$11,996 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$17,325 AUD
$12,142 USD
View
Price last confirmed 10 days ago
Retailer 6
-
$18,357 AUD
$12,865 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$18,409 AUD
View
Price last confirmed 9 days ago
Retailer 8
-
$18,538 AUD
£10,230 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
$18,672 AUD
$13,086 USD
View
Price last confirmed 8 days ago
Retailer 10
-
$19,080 AUD
£10,529 GBP
View
Price last confirmed 9 days ago
Retailer 11
-
$19,918 AUD
$13,959 USD
View
Price last confirmed 10 days ago
Retailer 12
-
$19,969 AUD
$13,995 USD
View
Price last confirmed 7 days ago
Retailer 13
-
$20,229 AUD
$14,177 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Reve Diamonds
49609C2F6 · Oct 25
$20,727 AUD
$14,526 USD
View
13 more retailers have this diamond
Prices start from $14,685 AUDSave up to $6,043 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
$14,685 AUD