Heart|Natural|GIA

0.45ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 5566311791

Certificate GIA 5566311791

Diamond specifications and retailer prices

From $440 USD
As of October 28, 2026
Save $103 USD (19%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $543 USD at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

About this 0.45ct natural heart diamond

This 0.45ct natural heart sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5566311791. Listed at 2 retailers as of October 28, 2026, with prices from $440 to $543, a $103 spread on the same certified stone. 77 Diamonds lists it at $543. 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

0.45
Carat
D
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5566311791
Dimensions4.96 × 4.97 × 3.16 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Feather, Cavity
Top View
4.96 mm4.97 mm0.45 ctD / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceMedium
CertificateGIA 5566311791
Side View
Table 58.0%CrownGirdle: STK-ETKPavilionCuletDepth 63.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 28
Current: $543 USD|Low: $440 USD|High: $557 USD|Avg: $503 USD|+2.7%
77 Diamonds
Retailer 2
October 31, 2026
Retailer 2$440 USD
77 Diamonds$543 USD

29 data points across 2 retailers

2 retailers$440 USD to $543 USD

B+
Cheapest Retailer
-
$440 USD
Most Expensive
B+
77 Diamonds
HSCP4ZEQH8RF · Oct 31
$543 USD
£428 GBP
View
1 more retailer has this diamond
Prices start from $440 USDSave up to $103 USD

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+
0.45ct Heart
$440 USD