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Round|Lab Grown|IGI

1.61ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG551274402

Shape and cutting style on the report: Round brilliant

Certificate IGI LG551274402

Diamond specifications and retailer prices

From $445 AUD
$312 USD
As of November 3, 2026
Save $3,079 AUD (87%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,524 AUD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.61ct lab-grown round diamond

This 1.61ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG551274402 or 551274402. Listed at 17 retailers as of November 2, 2026, with prices from $445 to $3,524, a $3,079 spread on the same certified stone. Do Amore Diamonds lists it at $3,524. 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

1.61
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551274402
Dimensions7.47 × 7.43 × 4.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.47 mm7.43 mm1.61 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551274402
Side View
Table 58.0%Crown 35.6°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $965 AUD|Low: $351 AUD|High: $2,207 AUD|Avg: $959 AUD|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 9$445 AUD
Retailer 8$492 AUD
Retailer 2$551 AUD
Retailer 6$721 AUD
Retailer 7$815 AUD
Retailer 10$872 AUD
Retailer 1$965 AUD
Retailer 4$1,120 AUD
Retailer 5$1,514 AUD
Retailer 3$2,180 AUD

41 data points across 10 retailers

17 retailers$445 AUD to $3,524 AUD

Retailer 1
-
$381 AUD
$267 USD
Price last confirmed 32 days ago
Retailer 2
-
$398 AUD
$279 USD
View
Price last confirmed 42 days ago
A
Retailer 3
-
$445 AUD
$312 USD
View
Final sale: no returns
Retailer 4
-
$461 AUD
$323 USD
View
Price last confirmed 42 days ago
Retailer 5
-
$487 AUD
$341 USD
View
Price last confirmed 42 days ago
Retailer 6
-
$492 AUD
$345 USD
View
Price last confirmed 31 days ago
A
Retailer 7
-
$551 AUD
$386 USD
View
A
Retailer 8
-
$721 AUD
$505 USD
View
B+
Retailer 9
-
$815 AUD
$571 USD
View
B+
Retailer 10
-
$872 AUD
$611 USD
View
B+
Retailer 11
-
$965 AUD
£533 GBP
View
Retailer 12
-
$1,120 AUD
$785 USD
View
Price last confirmed 12 days ago
B
Retailer 13
-
$1,514 AUD
$1,061 USD
View
Retailer 14
-
$1,749 AUD
$1,226 USD
View
Price last confirmed 43 days ago
Retailer 15
-
$1,749 AUD
$1,226 USD
View
Price last confirmed 26 days ago
B
Retailer 16
-
$2,180 AUD
£1,203 GBP
View
Most Expensive
B
Do Amore Diamonds
27-ED0C343CA · Nov 2
$3,524 AUD
$2,470 USD
View
16 more retailers have this diamond
Prices start from $445 AUDSave up to $3,079 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.

A
1.61ct Round
$445 AUD