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Marquise|Natural|GIA

1.00ct H VS1 Marquise Natural Diamond

VG • H/VS1 • GIA 2566403055

Certificate GIA 2566403055

Diamond specifications and retailer prices

From $5,819 AUD
As of November 5, 2026
Save $4,532 AUD (44%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,351 AUD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2566403055. Listed at 18 retailers as of November 5, 2026, with prices from $5,819 to $10,351, a $4,532 spread on the same certified stone. Helzberg Diamonds lists it at $10,351. 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

1.00
Carat
H
Colour
VS1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.4°
Pavilion angle41.86°
OriginNatural
Grading LabGIA
CertificateGIA 2566403055
Dimensions9.66 × 5.18 × 3.37 mm
L/W Ratio1.86
Culet sizeNone
Top View
9.66 mm5.18 mm1.00 ctH / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566403055
Side View
Table 62.0%Crown 40.4°Girdle: THN-THKPavilion 41.86°Culet: NDepth 65.1%

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 5
Current: $10,351 AUD|Low: $5,819 AUD|High: $10,351 AUD|Avg: $7,407 AUD
Helzberg Diamonds
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
Retailer 19
November 7, 2026
Retailer 5$5,819 AUD
Retailer 15$5,916 AUD
Retailer 11$5,922 AUD
Retailer 8$5,982 AUD
Retailer 4$6,119 AUD
Retailer 6$6,251 AUD
Retailer 10$6,303 AUD
Retailer 2$6,509 AUD
Retailer 7$7,059 AUD
Retailer 12$7,274 AUD
Retailer 18$7,289 AUD
Retailer 9$7,319 AUD
Retailer 14$7,424 AUD
Retailer 3$7,984 AUD
Retailer 13$8,013 AUD
Retailer 16$8,077 AUD
Retailer 17$9,742 AUD
Retailer 19$10,310 AUD
Helzberg Diamonds$10,351 AUD

23 data points across 19 retailers

18 retailers$5,819 AUD to $10,351 AUD

B+
Cheapest Retailer
-
$5,819 AUD
B+
Retailer 2
-
$5,916 AUD
View
B+
Retailer 3
-
$5,922 AUD
View
B+
Retailer 4
-
$5,982 AUD
View
B+
Retailer 5
-
$6,119 AUD
View
B+
Retailer 6
-
$6,251 AUD
View
B+
Retailer 7
-
$6,303 AUD
View
B+
Retailer 8
-
$6,509 AUD
View
B
Retailer 9
-
$7,059 AUD
View
B+
Retailer 10
-
$7,274 AUD
View
B
Retailer 11
-
$7,289 AUD
View
B
Retailer 12
-
$7,319 AUD
View
B+
Retailer 13
-
$7,424 AUD
View
B
Retailer 14
-
$7,984 AUD
View
B
Retailer 15
-
$8,013 AUD
View
B
Retailer 16
-
$9,742 AUD
View
B
Retailer 17
-
$10,310 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRILMMKGJGLL · Nov 6
$10,351 AUD
$7,112 USD
View
17 more retailers have this diamond
Prices start from $5,819 AUDSave up to $4,532 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+
1.00ct Marquise
$5,819 AUD