Heart|Natural|GIA

1.70ct D SI2 Heart Natural Diamond

VG • D/SI2 • GIA 2437900550

Certificate GIA 2437900550

Diamond specifications and retailer prices

From $9,085 AUD
$6,382 USD
As of October 31, 2026
Save $5,494 AUD (38%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $16,463 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.7ct natural heart diamond

This 1.7ct natural heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2437900550. Listed at 7 retailers as of October 29, 2026, with a 60% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2437900550
Dimensions8.25 × 6.89 × 5.08 mm
L/W Ratio1.20
Top View
8.25 mm6.89 mm1.70 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2437900550
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.6%

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 31
Current: $14,579 AUD|Low: $8,328 AUD|High: $14,675 AUD|Avg: $10,832 AUD|-0.5%
Retailer 1
Retailer 2
Retailer 3
October 29, 2026
Retailer 3$9,038 AUD
Retailer 2$9,085 AUD
Retailer 1$14,579 AUD

9 data points across 3 retailers

7 retailers$9,085 AUD to $14,579 AUD

Retailer 1
-
$9,085 AUD
$6,382 USD
Price last confirmed 24 days ago
B+
Retailer 2
-
$9,085 AUD
$6,382 USD
View
Final sale: no returns
Retailer 3
-
$9,843 AUD
$6,914 USD
View
Price last confirmed 24 days ago
Retailer 4
-
$9,994 AUD
$7,020 USD
View
Price last confirmed 31 days ago
Retailer 5
-
$11,357 AUD
$7,978 USD
View
Price last confirmed 33 days ago
B
Retailer 6
-
$14,579 AUD
£8,064 GBP
View
Most Expensive
NZ Jewellers
8395e930-3c1d-429f-9994-5643213d5767 · Sep 30
$16,463 AUD
$11,564 USD
View
Price last confirmed 32 days ago
6 more retailers have this diamond
Prices start from $9,085 AUDSave up to $5,494 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 Heart
$9,085 AUD